Sean Doolittle RP OAK 7 Days

Doolittle has a slight rotator cuff tear in his left shoulder as well as "considerable" inflammation in the area and is not expected to be ready by the start of the season, Jane Lee of MLB.com reports.

Upon diagnosis, Doolittle was treated with a platelet-rich plasma injection, and the team will now wait until the inflammation dies down before re-evaluating him and determining the next step. With Doolittle not expected to be ready for Opening Day, the A's figure to turn to recent trade acquisition Tyler Clippard to handle ninth-inning duties to start the year. That said, Eric O'Flaherty, who served as the team's closer for a stretch last year when Doolittle was hurt, could see some opportunities based on the matchups.

Sean Doolittle RP OAK 7 Days

Doolittle has a small rotator cuff tear and is not expected to be ready for the start of the season, reports Susan Slusser of the San Francisco Chronicle.

This is big and bad news for the A's. Doolittle was expected to start the season as the A's closer and now it is unclear when he will be ready. New acquisition Tyler Clippard will likely be the favorite to close games to start the season.

Sean Doolittle RP OAK 4 Months

Doolittle notched his 22nd save of the season on Friday against the Phillies as he pitched a perfect ninth inning lowering his ERA to 2.91 on the year.

After getting destroyed (five earned runs) by blowing a save on Thursday night, Doolittle bounced back in fine fashion. Doolittle hasn't had many hiccups on the season, and it's obvious manager Bob Melvin has faith in him from here on out. Keep Doolittle active down the final stretch.

Sean Doolittle RP OAK 4 Months

Doolittle blew the save Wednesday, coughing up five runs on three hits, two walks and a home run, while recording only one out against the Rangers.

Doolittle wasted a stellar outing by starter Jeff Samardzija, who shut the Ranger out for eight innings. The closer was perfect in his two previous appearances since being reinstated from the disabled list September 13.

Sean Doolittle RP OAK 5 Months

Doolittle pitched a perfect tenth with a strikeout to pick up the save Saturday against the Mariners.

Doolittle had been reinstated from the disabled list merely one day earlier and he picked up his 21st save of the season. It was his first game since August 23, and he picked up right where he left off. Since the 1st of July, Doolittle has allowed only one run and hasn't blown a save in 10 chances.

Sean Doolittle RP OAK 5 Months

Doolittle (oblique) has been reinstated from the disabled list.

As expected, Doolittle will return to the active roster after a successful throwing session Thursday morning. The lefty will almost certainly step back into his role as the primary closer.

Sean Doolittle RP OAK 5 Months

Doolittle (oblique) is expected to come off the DL on Friday, Susan Slusser of the San Francisco Chronicle reports.

Evidently, Doolittle felt no ill effects Thursday morning after throwing 20 pitches to hitters standing in the box Wednesday, as manager Bob Melvin said he "fully expects" to have the lefty back for Friday's series opener against Seattle. Doolittle, who owns an otherworldly 80:5 K:BB this season, should immediately return the closer role.

Sean Doolittle RP OAK 5 Months

Doolittle (oblique) is likely to be activated from the DL on Friday if he comes out of Thursday's session feeling good, the San Francisco Chronicle's Susan Slusser reports.

He threw 20 pitches to hitters standing in the box Wednesday and said it went great, so all signs point to the A's having their closer back this weekend. He was one of the more dominant relievers in baseball prior to the oblique injury, and should be highly valued moving forward.

Sean Doolittle RP OAK 5 Months

Doolittle (oblique) threw 20 pitches to hitters standing in the box Wednesday and said it went great, Susan Slusser of the San Francisco Chronicle reports.

Doolittle returned to a mound Monday and appears to be inching closer to a return, though the team may want to see him throw an actual live batting practice session before activating him. If so, Doolittle may not return until this weekend's series against Seattle, but he should have little trouble reclaiming the closer role once healthy.

Sean Doolittle RP OAK 5 Months

Doolittle (oblique) threw off a mound Monday and felt good, Susan Slusser of the San Francisco Chronicle reports.

Doolittle will face live hitters Wednesday and could come off the DL late in the week. The A's have only had two save opportunities since he hit the DL, but getting him back will be big for their bullpen and nice for owners down the stretch, if the A's can get some leads for Doolittle to save.