4:28 PM - Justus Sheffield (SEA) will start Game 2 of Tuesday's doubleheader against the Tigers, Corey Brock of The Athletic reports.

3:46 PM - Justus Sheffield (SEA) is up as the 29th man for Tuesday's doubleheader against the Tigers.

9:47 PM - Justus Sheffield (SEA) (neck) struck out three and allowed three earned runs on six hits and two walks over five innings in his most recent outing for Triple-A Tacoma on Wednesday.

9:47 PM - Justus Sheffield (SEA) (neck) struck out three and allowed three earned runs on six hits and two walks over five innings in his most recent outing for Triple-A Tacoma on Wednesday.

12:36 PM - Justus Sheffield (SEA) was scratched from his scheduled start Friday for Triple-A Tacoma while in pregame warmups due to stiffness in his neck, but the Rainiers are still hoping he'll take the mound when next scheduled Wednesday, Rainiers play-by-play broadcaster Mike Curto reports.

12:19 PM - Justus Sheffield (SEA) Mariners optioned Sheffield to Triple-A Tacoma on Sunday.

1:30 PM - Justus Sheffield (SEA) was recalled from Triple-A Tacoma to serve as the 27th man during Saturday's doubleheader against the Angels.

4:10 PM - Justus Sheffield (SEA) started Triple-A Tacoma's loss to Sacramento on Sunday and allowed an earned run on four hits over five innings. He struck out six.

7:11 PM - Justus Sheffield (SEA) was optioned to Triple-A Tacoma on Sunday, Ryan Divish of The Seattle Times reports.

12:26 PM - Justus Sheffield (SEA) fired two scoreless innings in a loss to the Rays on Wednesday, allowing no hits and one walk.

3:03 AM - Justus Sheffield (SEA) has logged just one appearance thus far in 2022, firing a perfect inning during which recorded a strikeout Sunday against the Twins.

2:00 PM - Justus Sheffield (SEA) is building up for starting duty in spring training and is expected to compete for a spot in the Mariners' Opening Day rotation, Daniel Kramer of MLB.com reports.

6:23 PM - Justus Sheffield (SEA) was optioned to Triple-A Tacoma on Monday.

2:16 PM - Justus Sheffield (SEA) allowed two runs (one earned) on four hits and a walk over 2.1 innings of relief in a loss to the Astros on Monday.

8:49 AM - Justus Sheffield (SEA) (6-8) earned the win over the Astros on Wednesday after tossing a scoreless sixth inning while allowing a hit. He did not walk or strike out a batter.

1:22 PM - Justus Sheffield (SEA) (forearm) was reinstated from the 10-day injured list Wednesday.

7:07 PM - Justus Sheffield (SEA) (forearm) was credited with a hold in his most recent rehab appearance for Triple-A Tacoma on Sunday, firing a perfect seventh inning during which he recorded two strikeouts.

5:01 PM - Justus Sheffield (SEA) (forearm) allowed three runs (two earned) on three hits and a walk over one inning in Triple-A Tacoma's win over Salt Lake on Thursday. He struck out one.

6:31 PM - Justus Sheffield (SEA) (forearm) is expected to serve as a reliever when he's reinstated from the 10-day injured list, Corey Brock of The Athletic reports.

10:49 AM - Justus Sheffield (SEA) (forearm) allowed two earned runs on three hits over four innings while recording seven strikeouts in Triple-A Tacoma's win over Sacramento on Friday, his second rehab start for the Rainiers.

4:00 PM - Justus Sheffield (SEA) (forearm) confirmed he'll begin a rehab assignment Sunday at Triple-A Tacoma, Jen Mueller of Root Sports Northwest reports.

11:41 PM - Justus Sheffield (SEA) (forearm) completed a 35-pitch bullpen session Tuesday and is expected to begin a rehab assignment this weekend, Daniel Kramer of MLB.com reports.

11:30 AM - Justus Sheffield (SEA) (forearm) won't begin a rehab assignment Sunday, Shannon Drayer of 710 ESPN Seattle reports.

7:15 PM - Justus Sheffield (SEA) (forearm) is set to appear in his first rehab outing Sunday for High-A Everett, Jen Mueller of Root Sports Northwest reports.

1:52 PM - Justus Sheffield (SEA) (forearm) threw off a mound Sunday and is set for a full bullpen session Wednesday, the Associated Press reports.

7:38 PM - Justus Sheffield (SEA) (forearm) is scheduled to throw off a mound Sunday, Ryan Divish of The Seattle Times reports.

8:32 PM - Justus Sheffield (SEA) Scott Servais said that Sheffield (forearm) resumed throwing Friday, Shannon Drayer of 710 ESPN Seattle reports.

8:01 PM - Justus Sheffield (SEA) Scott Servais said Friday that Sheffield (forearm) won't "pitch anytime in the near future," Daniel Kramer of MLB.com reports.

2:27 PM - Justus Sheffield (SEA) forearm strain will keep him out for a while and render him unable to return for his first turn in the rotation after the All-Star break, Ryan Divish of The Seattle Times reports.

9:33 PM - Justus Sheffield (SEA) Mariners placed Sheffield on the 10-day injured list Wednesday, Ryan Divish of Seattle Times reports.

7:31 AM - Justus Sheffield (SEA) (5-8) took the loss Tuesday against the Yankees after allowing six runs on five hits and three walks while striking out two over 1.2 innings.

8:55 AM - Justus Sheffield (SEA) didn't factor into the decision in Wednesday's 9-7 extra-inning win over the Blue Jays, giving up four runs on seven hits and three walks over four innings. He struck out three.

11:09 PM - Justus Sheffield (SEA) (5-7) allowed three earned runs on four hits and three walks while striking out five across 4.1 innings to take the loss Wednesday against the Rockies.

9:54 AM - Justus Sheffield (SEA) (5-6) was tagged with the loss Wednesday against the Twins after allowing seven runs on 10 hits (including two home runs) and two walks while fanning four across five innings.

11:08 AM - Justus Sheffield (SEA) (5-4) earned the win Thursday against the Angels after allowing two runs on six hits and three walks while fanning seven across 5.2 innings.

12:52 PM - Justus Sheffield (SEA) (3-3) was credited with the win over the Indians on Saturday, allowing two earned runs on five hits and two walks over six innings. He struck out two.

8:14 AM - Justus Sheffield (SEA) (2-3) allowed seven runs (five earned) on 10 hits while striking out five over five innings in a loss to the Rangers on Sunday.

8:14 AM - Justus Sheffield (SEA) (2-2) allowed two hits and three walks with four strikeouts over six scoreless innings in a 2-0 win over the Angels on Sunday.

8:02 AM - Justus Sheffield (SEA) (1-1) allowed three runs on four hits and three walks while striking out six over 5.2 innings, as he got the win over the Dodgers on Monday.

11:51 PM - Justus Sheffield (SEA) didn't factor into the decision in the first game of Tuesday's doubleheader against the Orioles, allowing two runs on three hits and two walks over six innings while striking out five.

8:44 PM - Justus Sheffield (SEA) will not make his scheduled start Monday since the game between Seattle and Baltimore has been postponed due to inclement weather, Jon Meoli of The Baltimore Sun reports.

8:13 AM - Justus Sheffield (SEA) (0-1) took the loss against the White Sox on Monday after allowing six runs (four earned) on eight hits and two walks while striking out five over five innings.

7:51 PM - Justus Sheffield (SEA) allowed two earned runs on four hits and three walks over 4.2 innings in a Cactus League win over the Dodgers on Monday. He struck out five.

9:42 PM - Justus Sheffield (SEA) fired four scoreless innings in a Cactus League win over the Royals on Tuesday, allowing two hits and two walks while recording six strikeouts.

5:15 PM - Justus Sheffield (SEA) allowed six earned runs on seven hits and three walks while failing to record a strikeout over 2.1 innings during a Cactus League loss to the Rangers on Wednesday.

1:42 PM - Justus Sheffield (SEA) will make his first Cactus League start Thursday versus the Rockies, Daniel Kramer of MLB.com reports.

3:00 AM - Justus Sheffield (SEA) (3-3) earned the win over Arizona on Saturday, tossing seven innings and allowing two runs on five hits and three walks while striking out seven.

6:07 AM - Justus Sheffield (SEA) (2-2) earned the win against Texas on Saturday, pitching six innings and allowing one run on six hits and one walk while striking out five.

9:29 PM - Justus Sheffield (SEA) allowed two runs (one earned) on six hits and one walk in Sunday's 3-2 loss to Houston. He struck out four and did not factor in the decision.

9:41 PM - Justus Sheffield (SEA) (1-2) allowed four hits across six shutout innings Sunday, striking out seven and earning the win over the Rockies on Sunday.

9:31 AM - Justus Sheffield (SEA) (0-2) was tagged with the loss in Monday's 11-1 defeat against the Athletics. He gave up four runs on four hits and two walks while fanning five in 4.2 innings.

3:26 AM - Justus Sheffield (SEA) (0-1) allowed four runs on three hits and four walks while striking out two over three innings in a loss to the Angels on Tuesday.

1:13 PM - Justus Sheffield (SEA) tuned up for the regular season by compiling eight strikeouts over four perfect innings in an intrasquad game Wednesday, Greg Johns of MLB.com reports.

2:06 PM - Justus Sheffield (SEA) continued working on his two-seam fastball during Thursday's intrasquad game, during which he allowed one run on three hits and recorded four strikeouts over three innings, Shannon Drayer of 710 ESPN Seattle reports. "I was looking to run my two-seam into the righties and front-hip them," said. "I was able to do that, I was happy to see I could put some guys away with that, which was a big focus after last week. I really needed to get in there and finish some hitters and I felt I did that."

11:11 AM - Justus Sheffield (SEA) who recorded five strikeouts across three innings in his third Cactus League start versus the Giants on Sunday, deployed a two-seam fastball with considerable success during the outing, Daniel Kramer of MLB.com reports. "Honestly, from pitch one today, beginning in his bullpen, that was the best I ever caught from Justus " catcher Tom Murphy said. "He threw his two-seamer exclusively. That was something he wanted to do. He put it on himself. It was the most natural that I've seen his fastball move."

7:19 PM - Justus Sheffield (SEA) allowed an earned run on two hits across three innings in a Cactus League loss to the Rockies on Monday. He struck out four.

7:21 PM - Justus Sheffield (SEA) fired two perfect innings during which he recorded three strikeouts in a Cactus League win over the Brewers on Tuesday.

12:49 PM - Justus Sheffield (SEA) gave up one run on five hits and four walks while striking out two over five innings in a no-decision against the A's on Friday night.

1:53 PM - Justus Sheffield (SEA) is slated to get two more starts before the conclusion of the regular season, Greg Johns of MLB.com reports.

12:52 PM - Justus Sheffield (SEA) will make his next start Tuesday against the Reds, Greg Johns of MLB.com reports.

5:46 PM - Justus Sheffield (SEA) will likely have his next start pushed back, Shannon Drayer of 710 ESPN Seattle reports.

5:36 PM - Justus Sheffield (SEA) gave up no runs on five hits and two walks while striking out seven through five innings in a no-decision against the Cubs on Monday.

9:13 PM - Justus Sheffield (SEA) (0-1) allowed five runs on six hits with no walks and five strikeouts across 4.1 innings while taking a loss against the Yankees on Wednesday.

3:51 PM - Justus Sheffield (SEA) will stick in Seattle's rotation and make his next start Wednesday versus the Yankees, Greg Johns of MLB.com reports.

3:56 PM - Justus Sheffield (SEA) was recalled from Double-A Arkansas to start Friday against the Blue Jays.

4:27 PM - Justus Sheffield (SEA) is expected to be recalled from Double-A Arkansas to start Friday's game against the Blue Jays, Shannon Drayer of 710 ESPN Seattle reports.

11:38 AM - Justus Sheffield (SEA) who's been considered a candidate for a promotion from Double-A Arkansas to start this Saturday against the Blue Jays, is more likely to be called up toward the end of August, Ryan Divish of The Seattle Times reports.

3:14 PM - Justus Sheffield (SEA) is a candidate to be called up from Double-A Arkansas to start Saturday against the Blue Jays, Greg Johns of MLB.com reports.

1:49 PM - Justus Sheffield (SEA) who is 1-2 with a 4.38 ERA across seven starts for Triple-A Tacoma, is not expected to be called up to fill the rotation spot that opened up when Erik Swanson was optioned to the Rainiers, Greg Johns of MLB.com reports. "I think when we get to the point where we call Justus up, we'd like to call him up and leave him here and let him go," manager Scott Servais said. "I don't want to call him up and give him one or two outings and then go back and forth. He's working on things right now."

3:25 PM - Justus Sheffield (SEA) picked up his first victory of the season in Triple-A Tacoma's win over Albuquerque on Monday, allowing an earned run on four hits and three walks across 5.1 innings while recording five strikeouts.

7:00 PM - Justus Sheffield (SEA) was optioned to Triple-A Tacoma on Saturday.

1:48 PM - Justus Sheffield (SEA) served as the long reliever behind Yusei Kikuchi in an extra-innings win over the Rangers on Friday, allowing two earned runs on two hits and four walks over three innings. He struck out three.

1:23 PM - Justus Sheffield (SEA) was officially promoted for his Mariners' debut Friday.

8:09 PM - Justus Sheffield (SEA) will be called up from Triple-A Tacoma to serve as the primary pitcher behind Yusei Kikuchi in Friday's game against the Rangers, Ryan Divish of The Seattle Times reports.

9:21 AM - Justus Sheffield (SEA) who's 0-1 with a 5.19 ERA through two starts at Triple-A Tacoma, is a candidate to be called up if Wade LeBlanc (oblique) is forced to miss at least one start, Greg Johns of MLB.com reports.

7:14 PM - Justus Sheffield (SEA) was optioned to Triple-A Tacoma on Monday, Shannon Drayer of 710 ESPN Seattle reports.

12:15 PM - Justus Sheffield (SEA) fired 3.2 scoreless innings in an afternoon intrasquad game Thursday during which he faced Dee Gordon, Mitch Haniger (back), Edwin Encarnacion and Ichiro Suzuki, Greg Johns of MLB.com reports.

2:06 PM - Justus Sheffield (SEA) (finger) is slated to follow starter Wade LeBlanc in the Mariners' pitching schedule during Sunday's Cactus League game versus the Padres, Ryan Divish of The Seattle Times reports.

10:33 AM - Justus Sheffield (SEA) will have his Cactus League debut bumped back a day or two due to a finger blister on his left hand, Greg Johns of MLB.com reports.