4:08 PM - Sean Doolittle (WSH) manager Dave Martinez announced Friday that Doolittle has been diagnosed with a patellar tendon strain in his right knee, Bobby Blanco of MASNSports.com reports.

3:03 PM - Sean Doolittle (WSH) (elbow) was placed on the 7-day injured list Wednesday at Triple-A Rochester, Bobby Blanco of MASNSports.com reports.

10:59 AM - Sean Doolittle (WSH) (elbow) has been transferred from Double-A Harrisburg to Triple-A Rochester, Jesse Dougherty of The Washington Post reports.

12:32 PM - Sean Doolittle (WSH) (elbow) was activated Tuesday off the minor-league injured list, Bobby Blanco of MASNSports.com reports.

4:25 PM - Sean Doolittle (WSH) (elbow) is scheduled to pitch again Friday at Low-A Fredericksburg, Mark Zuckerman of MASNSports.com reports.

1:45 PM - Sean Doolittle (WSH) (elbow) had his rehab assignment transferred Tuesday from High-A Wilmington to Low-A Fredericksburg, Mark Zuckerman of MASNSports.com reports.

5:02 PM - Sean Doolittle (WSH) (elbow) began a rehab assignment at High-A Wilmington on Saturday and struck out two while allowing one hit in a scoreless inning of relief.

5:29 PM - Sean Doolittle (WSH) (elbow) has begun back-to-back mound sessions at the Nationals' spring training complex in Florida, Mark Zuckerman of MASNSports.com reports.

6:34 PM - Sean Doolittle (WSH) (elbow) threw live batting practice Tuesday at the Nationals' spring training complex, Jessica Camerato of MLB.com reports.

4:51 PM - Sean Doolittle (WSH) manager Dave Martinez said Friday that Doolittle (elbow) has begun throwing bullpen sessions, Bobby Blanco of MASNSports.com reports.

2:28 PM - Sean Doolittle (WSH) (elbow) had yet to be cleared for mound work as of Thursday, Mark Zuckerman of MASNSports.com reports.

12:19 PM - Sean Doolittle (WSH) (elbow) is remaining at the Nationals' spring training complex in Florida to continue his rehab, per MLB.com.

2:57 PM - Sean Doolittle (WSH) (elbow) still hasn't seen Grapefruit League action this spring and won't be ready for Opening Day, but he could be the Nationals' top left-handed option in the bullpen when healthy, Jesse Dougherty of The Washington Post reports.

2:00 PM - Sean Doolittle (WSH) (elbow) is no longer expected to be ready for Opening Day, Mark Zuckerman of MASNSports.com reports.

5:25 PM - Sean Doolittle (WSH) (elbow) said Friday that he'll be a full participant when pitchers and catchers report to spring training in two weeks, Mark Zuckerman of MASNSports.com reports. "I'm not limited in any way right now," said , who underwent an internal brace procedure in July to address a partially torn UCL in his left elbow.

11:45 AM - Sean Doolittle (WSH) (elbow) signed a minor-league contract with the Nationals on Sunday, which includes an invitation to major-league spring training Dan Kolko of MASN Sports reports.

5:41 PM - Sean Doolittle (WSH) (elbow) will have an internal brace procedure to repair his UCL tear, Mark Zuckerman of MASNSports.com reports.

5:41 PM - Sean Doolittle (WSH) manager Dave Martinez said Thursday that Doolittle will visit a doctor after experiencing soreness in his left elbow during a recent bullpen session, Matt Weyrich of NBC Sports Washington reports.

3:09 PM - Sean Doolittle (WSH) (elbow) threw 15 pitches during a bullpen session Thursday, Jesse Dougherty of The Washington Post reports.

10:19 PM - Sean Doolittle (WSH) (elbow) is scheduled to throw a bullpen session Thursday for the first time since landing on the injured list April 20, Mark Zuckerman of MASNSports.com reports.

6:21 PM - Sean Doolittle (WSH) (elbow) has been throwing from 75 feet recently, Jesse Dougherty of The Washington Post reports.

11:52 PM - Sean Doolittle (WSH) (elbow) recently resumed playing catch and is throwing long toss, Jessica Camerato of MLB.com reports.

3:42 PM - Sean Doolittle (WSH) Nationals transferred Doolittle (elbow) from the 10-day injured list to the 60-day IL on Wednesday, Jessica Camerato of MLB.com reports.

6:35 PM - Sean Doolittle (WSH) Dave Martinez said Wednesday that Doolittle (elbow) hasn't yet been cleared to resume throwing, Mark Zuckerman of MASNSports.com reports.

5:05 PM - Sean Doolittle (WSH) Dave Martinez said that Doolittle, who was placed on the 10-day injured list Wednesday with a left elbow sprain, will be re-evaluated in 10-to-12 days before the Nationals determine his next steps, Jesse Dougherty of The Washington Post reports.

3:39 PM - Sean Doolittle (WSH) Nationals placed Doolittle on the 10-day injured list Wednesday with a sprained left elbow.

10:34 AM - Sean Doolittle (WSH) struck out two in a perfect seventh inning during Sunday's win over the Mets.

2:24 PM - Sean Doolittle (WSH) was diagnosed with an oblique strain Friday, Brittany Ghiroli of The Athletic reports.

9:41 PM - Sean Doolittle (WSH) exited Thursday's game against Atlanta after appearing to suffer an injury to his side, Mark Zuckerman of MASNSports.com reports.

9:12 AM - Sean Doolittle (WSH) struck out two in a perfect eighth inning during Monday's loss to the Phillies.

3:06 PM - Sean Doolittle (WSH) (knee) was activated from the injured list Wednesday, Mark Zuckerman of MASNSports.com reports.

9:42 AM - Sean Doolittle (WSH) (knee) threw 24 pitches in a simulated game Friday at the Nationals' alternate training site, Jessica Camerato of MLB.com reports.

4:35 PM - Sean Doolittle (WSH) Dave Martinez said Doolittle (knee) could face live hitters Friday, Jesse Dougherty of The Washington Post reports.

5:06 PM - Sean Doolittle (WSH) is dealing with some inflammation in his right knee, Jesse Dougherty of The Washington Post reports.

12:49 PM - Sean Doolittle (WSH) Nationals placed Doolittle on the 10-day injured list Thursday with right knee fatigue, Brittany Ghiroli of Athletic reports.

11:47 AM - Sean Doolittle (WSH) (0-1) allowed one run on two hits and a walk over 0.2 innings Sunday to take the loss as the Nationals fell 3-2 to the Yankees. He struck out one.

12:27 PM - Sean Doolittle (WSH) said Sunday he thinks he's "planning on playing" in 2020, but if he starts "to feel unsafe" or it begins to impact his mental health, he may opt out of the season, Jesse Dougherty of The Washington Post reports.

11:25 AM - Sean Doolittle (WSH) will make his first appearance of the spring Sunday, Jessica Camerato of MLB.com reports.

11:02 AM - Sean Doolittle (WSH) has no timetable for his Grapefruit League debut as the Nationals carefully monitor his spring workload, Jesse Dougherty of The Washington Post reports.

10:57 PM - Sean Doolittle (WSH) Nationals will pick up Doolittle's $6.5 million club option for 2020, Mark Feinsand of MLB.com reports.

4:33 PM - Sean Doolittle (WSH) pitched a perfect inning in Tuesday's 4-1 win over the Phillies in the first game of a doubleheader, retiring all three batters without a strikeout.

11:59 AM - Sean Doolittle (WSH) Dave Martinez confirmed that Doolittle remains his closer Tuesday, Byron Kerr of MASN Sports reports.

9:48 AM - Sean Doolittle (WSH) (6-5) took the loss Monday as the Nationals dropped a 4-2 decision to the Cardinals, getting charged with one run after walking one batter and striking out two in two-thirds of an inning.

10:44 AM - Sean Doolittle (WSH) (knee) was activated off the 10-day injured list Sunday.

5:09 PM - Sean Doolittle (WSH) (knee) is expected to come off the injured list Sunday, Brittany Ghiroli of The Athletic reports.

11:23 PM - Sean Doolittle (WSH) (knee) said he expects to join High-A Potomac for a rehab appearance Friday, Jesse Dougherty of The Washington Post reports.

4:42 PM - Sean Doolittle (WSH) (knee) completed a successful simulated game Wednesday, Brittany Ghiroli of The Athletic reports.

3:34 PM - Sean Doolittle (WSH) (knee) is slated to throw a simulated game Wednesday and is hopeful to be activated from the injured list during Washington's upcoming series with Miami, Byron Kerr of MASN Sports reports.

12:49 PM - Sean Doolittle (WSH) (knee) has thrown off a mound for the past two days and is hoping to be activated when first eligible to return from the injured list, Mark Zuckerman of MASN Sports reports.

12:01 PM - Sean Doolittle (WSH) was placed on the 10-day injured list Sunday with right knee tendinitis, Sam Fortier of The Washington Post reports.

11:41 AM - Sean Doolittle (WSH) and manager Dave Martinez both acknowledged that the team may need to treat save situations differently moving forward after the closer gave up three home runs during Saturday's blown save, Mark Zuckerman of MASN reports.

11:27 PM - Sean Doolittle (WSH) gave up two runs on three hits and one walk through one inning to record his 27th save in a 7-6 win over the Reds on Monday.

6:29 PM - Sean Doolittle (WSH) struck out one batter in a perfect ninth inning Sunday to earn the save over the Mets.

10:53 AM - Sean Doolittle (WSH) (6-4) took the loss Friday, getting hammered for four runs on six hits in two-thirds of an inning to blow his fifth save of the season as the Nationals were downed 706 by the Mets.

9:58 AM - Sean Doolittle (WSH) allowed a hit and struck out two in a scoreless ninth inning Tuesday to record his 25th save of the season in a win over the Giants.

8:50 PM - Sean Doolittle (WSH) (6-3) allowed a solo home run during the 10th inning in a loss against the Braves on Wednesday.

5:12 PM - Sean Doolittle (WSH) gave up a hit and struck out two in a scoreless ninth inning to record his 22nd save of the season in the first game of Wednesday's doubleheader against the Rockies.

6:50 AM - Sean Doolittle (WSH) struck out two over 1.2 perfect innings to record his 21st save of the season in Saturday's 5-3 win over Atlanta.

11:43 PM - Sean Doolittle (WSH) gave up a hit in a scoreless ninth inning Saturday to record his 20th save of the season in a 4-3 win over the Phillies.

4:33 PM - Sean Doolittle (WSH) (6-2) didn't allow a run and captured a win Sunday against the Royals, but he did give up two hits and blew his fourth save of the year during 1.1 innings.

3:16 AM - Sean Doolittle (WSH) (5-2) didn't allow any hits while striking out two with one walk during the ninth inning and earn a victory against the Marlins on Tuesday.

5:58 PM - Sean Doolittle (WSH) threw a scoreless ninth inning despite allowing a hit and a walk Sunday, striking out one batter and earning the save over Detroit.

11:02 AM - Sean Doolittle (WSH) gave up a run on a hit and a walk during the ninth inning of Thursday's win over the Marlins.

11:25 PM - Sean Doolittle (WSH) allowed a hit but recorded the final out of Wednesday's 7-5 win over the Marlins to record the save.

11:26 PM - Sean Doolittle (WSH) pitched the ninth inning, not allowing a baseunner and striking out one to earn the save Thursday against the Phillies.

11:24 PM - Sean Doolittle (WSH) recorded his 13th save of the season, registering two outs, including a strikeout, during a 9-5 victory against the White Sox on Tuesday.

11:06 PM - Sean Doolittle (WSH) allowed a hit and struck out the side in a scoreless ninth inning Tuesday to record his 10th save of the season in a 5-4 win over Atlanta.

9:52 AM - Sean Doolittle (WSH) failed to record an out while blowing his second save of the season in Wednesday's loss to the Mets, getting charged with four runs on two hits, a walk and a HBP.

11:03 PM - Sean Doolittle (WSH) struck out one in a perfect ninth inning Saturday to record his eighth save of the season in a 5-2 win over the Cubs.

11:22 PM - Sean Doolittle (WSH) allowed two runs on four hits with a walk and two strikeouts while earning his seventh save in a 7-6 victory against the Mets on Thursday.

11:18 PM - Sean Doolittle (WSH) allowed one hit and one walk but struck out two and didn't allow an earned run to earn a four-out save Thursday against the Cardinals.

9:13 PM - Sean Doolittle (WSH) allowed one earned run on three hits while striking out two across one inning to earn the save Thursday against the Giants.

7:18 PM - Sean Doolittle (WSH) allowed one hit and a walk but posted his first save of the year in a 3-2 victory against the Pirates on Saturday.

6:16 PM - Sean Doolittle (WSH) (1-0) posted a blown save but "vultured" a victory by allowing no runs on three hits while striking out two during 1.2 innings against the Mets on Sunday.

10:42 AM - Sean Doolittle (WSH) struck out one in a perfect ninth inning to record his first save of the spring in Monday's exhibition game against the Yankees.

9:56 PM - Sean Doolittle (WSH) threw his fastball between 92 and 93 mph on Thursday, Jesse Dougherty of The Washington Post reports.

8:15 PM - Sean Doolittle (WSH) gave up five runs on four hits and one walk over two-thirds of an inning during Saturday's spring game against the Cardinals.

10:41 AM - Sean Doolittle (WSH) struck out one in a scoreless inning during Monday's Grapefruit League game against the Cardinals.

8:28 PM - Sean Doolittle (WSH) was removed from Saturday's appearance after 27 pitches, failing to finish the ninth inning of the Nationals' 12-2 victory over the Rockies, but there are no physical concerns with him, Chelsea Janes of The Washington Post reports. Manager Dave Martinez said he removed because he threw too many pitches.

4:56 AM - Sean Doolittle (WSH) recorded a strikeout in a 1-2-3 inning to earn his 24th save of the season Sunday against the Falcons.

4:24 PM - Sean Doolittle (WSH) recorded the save against the Phillies on Tuesday, allowing one run on one hit during the ninth inning. He struck out two and walked one.

11:28 AM - Sean Doolittle (WSH) (toe) was activated from the 10-day disabled list on Friday, Jamal Collier of MLB.com reports.

12:45 PM - Sean Doolittle (WSH) Dave Martinez said Doolittle (toe) played catch Thursday and could return from the 10-day DL at some point this weekend, Mark Zuckerman of MASN Sports reports.

1:10 PM - Sean Doolittle (WSH) (toe) threw a successful simulated game Wednesday, Dan Kolko of MASN Sports reports.

1:02 PM - Sean Doolittle (WSH) (toe) will throw a simulated game Wednesday, Chelsea Janes of The Washington Post reports.

10:33 AM - Sean Doolittle (WSH) manager Dave Martinez said Doolittle (toe) "looked good" during a simulated game Sunday and could be activated from the 10-day disabled list at some point during the upcoming week, Mark Zuckerman of MASN Sports reports.

12:08 PM - Sean Doolittle (WSH) (toe) felt encouraged by his simulated game Friday, Mark Zuckerman of MASN Sports reports.

2:12 PM - Sean Doolittle (WSH) (toe) threw a bullpen session Tuesday and will throw a simulated game Friday, Dan Kolko of MASN Sports reports.

10:01 AM - Sean Doolittle (WSH) (toe) completed a bullpen session Sunday, Jorge Castillo of The Washington Post reports.

9:20 AM - Sean Doolittle (WSH) (toe) felt "not great but OK" after his most recent bullpen session, Mark Zuckerman of MASN Sports reports.

1:39 PM - Sean Doolittle (WSH) (toe) threw a bullpen session Tuesday, Chelsea Janes of The Washington Post reports.

1:44 PM - Sean Doolittle (WSH) (toe) is set to throw off a mound Monday after tossing on flat ground Sunday, Mark Zuckerman of MASN Sports reports.

10:36 AM - Sean Doolittle (WSH) (toe) is ready to attempt throwing off a mound, Mark Zuckerman of MASN Sports reports.

1:09 PM - Sean Doolittle (WSH) (toe) was able to shed his walking boot and play catch prior to Washington's game Wednesday, Dan Kolko of MASN Sports reports.

1:33 PM - Sean Doolittle (WSH) had an MRI on his injured foot Monday which was virtually unchanged from the one he underwent the previous week, Mark Zuckerman of MASN Sports reports.

2:17 PM - Sean Doolittle (WSH) (toe) will undergo another MRI on Monday to make sure there isn't a stress fracture in his foot, Jorge Castillo of The Washington Post reports.

7:50 AM - Sean Doolittle (WSH) underwent an MRI on the injured toe on his left foot Saturday, which revealed that the closer was dealing with a stress reaction, Dan Kolko of MASN Sports reports. The Nationals don't have a timetable for 's return, but it's expected that he'll be sidelined for at least a few more weeks.

1:12 PM - Sean Doolittle (WSH) (toe) threw off a mound Friday for the first time since suffering the injury, Jorge Castillo of The Washington Post reports.

11:30 AM - Sean Doolittle (WSH) was placed on the 10-day disabled list with left toe inflammation Tuesday, Mark Zuckerman of MASN Sports reports.

8:33 AM - Sean Doolittle (WSH) underwent an MRI on Saturday and was diagnosed with a strained toe, Chelsea Janes of The Washington Post reports.