8:30 PM - Riley O'Brien (STL) picked up the save in Sunday's 3-1 win at Milwaukee, allowing one walk and no hits over a scoreless inning with two strikeouts.

10:04 AM - Riley O'Brien (STL) was charged with three runs and pulled from a save chance before recording an out in Saturday's loss to the Brewers.

7:52 PM - Riley O'Brien (STL) earned the save in Sunday's 4-3 win over the Giants, allowing one hit in a scoreless ninth.

10:18 AM - Riley O'Brien (STL) (shoulder) struck out one in a scoreless frame and was credited with a win in Saturday's victory over the Giants.

9:35 AM - Riley O'Brien (STL) Cardinals are hopeful O'Brien (shoulder) will be available to pitch Friday against the Giants, the St. Louis Post-Dispatch reports.

6:48 PM - Riley O'Brien (STL) (shoulder) was cleared to play catch Monday and could avoid the 15-day injured list, Daniel Guerrero of the St. Louis Post-Dispatch reports.

12:27 PM - Riley O'Brien (STL) will be shut down from throwing for the time being after undergoing an MRI on his sore right shoulder Monday, John Denton of MLB.com reports.

6:12 PM - Riley O'Brien (STL) has dealt with fatigue in his right shoulder area in recent days and is set to be examined by a doctor Monday, Derrick Goold of the St. Louis Post-Dispatch reports.

9:30 AM - Riley O'Brien (STL) earned the save in a 7-4 win over the Marlins on Tuesday. He did not allow a hit but walked two and also struck out two in a scoreless inning.

7:24 PM - Riley O'Brien (STL) earned the save in Wednesday's 5-3 win over the Dodgers, issuing one walk over 1.1 scoreless innings.

9:52 AM - Riley O'Brien (STL) has permitted just one run and boasts a 20:8 K:BB over 16 innings covering his last 12 appearances.

3:04 PM - Riley O'Brien (STL) Cardinals recalled O'Brien from Triple-A Memphis on Monday.

11:43 AM - Riley O'Brien (STL) Cardinals optioned O'Brien to Triple-A Memphis on Friday.

10:21 AM - Riley O'Brien (STL) Cardinals recalled O'Brien from Triple-A Memphis on Thursday.

3:06 PM - Riley O'Brien (STL) Cardinals optioned O'Brien to Triple-A Memphis on Friday.

3:17 PM - Riley O'Brien (STL) Cardinals recalled O'Brien from Triple-A Memphis on Friday, Katie Woo of Athletic reports.

11:43 AM - Riley O'Brien (STL) Cardinals optioned O'Brien to Triple-A Memphis on Saturday.

9:24 AM - Riley O'Brien (STL) tossed a scoreless inning Friday versus the Mets after being unavailable for more than two weeks due to right elbow soreness, Derrick Goold of the St. Louis Post-Dispatch reports.

4:47 PM - Riley O'Brien (STL) Cardinals recalled O'Brien from Triple-A Memphis on Tuesday, Katie Woo of Athletic reports.

4:36 PM - Riley O'Brien (STL) Cardinals activated O'Brien (forearm) from the 60-day injured list Sunday and optioned him to Triple-A Memphis.

1:21 PM - Riley O'Brien (STL) (forearm) could be activated from the 60-day injured list next week after making two more rehab appearances with Triple-A Memphis, John Denton of MLB.com reports.

5:19 PM - Riley O'Brien (STL) (forearm) will begin a rehab assignment with Triple-A Memphis on Friday, John Denton of MLB.com reports.

5:39 PM - Riley O'Brien (STL) is scheduled to throw live batting practice Saturday at Double-A Springfield and could start a rehab assignment next week if Saturday's session goes well, John Denton of MLB.com reports.

2:19 PM - Riley O'Brien (STL) manager Oliver Marmol said that O'Brien (forearm) will throw a live batting practice session at Double-A Springfield on Wednesday, John Denton of MLB.com reports.

4:30 PM - Riley O'Brien (STL) will throw a live batting practice session Saturday and will begin a rehab assignment at Double-A Springfield on Tuesday if the live BP session goes well, John Denton of MLB.com reports.

4:12 PM - Riley O'Brien (STL) (forearm) will throw a bullpen in the next day or two, Lynn Worthy of the St. Louis Post-Dispatch reports Tuesday.

12:36 PM - Riley O'Brien (STL) experienced renewed pain in his right forearm following his 20-pitch live batting practice session with Double-A Springfield on June 15 and underwent further testing and and consultation with Dr. Keith Meister, MLB.com reports.

1:19 PM - Riley O'Brien (STL) (forearm) will begin a rehab assignment Saturday at Double-A Springfield, John Denton of MLB.com reports.

4:53 PM - Riley O'Brien (STL) will throw a live BP session Tuesday at Double-A Springfield, Daniel Guerrero of the St. Louis Post-Dispatch reports.

4:38 PM - Riley O'Brien (STL) (forearm) is slated to throw another bullpen session Sunday, John Denton of MLB.com reports.

9:35 AM - Riley O'Brien (STL) (forearm) has been long-tossing as he continues a throwing progression, Daniel Guerrero of the St. Louis Post-Dispatch reports.

4:28 PM - Riley O'Brien (STL) (forearm) was moved to the 60-day injured list Friday, John Denton of MLB.com reports.

6:49 PM - Riley O'Brien (STL) (forearm) will begin a throwing program this week, Katie Woo of The Athletic reports.

7:32 PM - Riley O'Brien (STL) (forearm) underwent an MRI on his right flexor tendon Monday, John Denton of MLB.com reports.

3:17 PM - Riley O'Brien (STL) was placed on the 15-day injured list Sunday with a flexor strain in his right forearm.

4:00 PM - Riley O'Brien (STL) has allowed three hits and struck out two without walking a batter over three scoreless innings in Grapefruit League play.

10:22 AM - Riley O'Brien (STL) Cardinals acquired O'Brien from the Mariners for cash considerations and purchased his contract from Triple-A Memphis on Monday, Derrick Goold of the St. Louis Post-Dispatch reports.