Sean Doolittle RP OAK 10 Days

Sean Doolittle got four outs for his 14th save on Sunday, closing out a win over the Mariners.

Doolittle entered with two runners on and two outs in the eighth inning, getting Kyle Seager to pop out to end the threat. He worked a perfect ninth for his 14th save. The lefty has a 2.89 ERA, 0.66 WHIP and 63/2 K/BB ratio over 43 2/3 innings this year, and he enters the second half firmly entrenched as the A's closer.

Sean Doolittle RP OAK 17 Days

Sean Doolittle allowed a solo home run but closed out the Blue Jays on Sunday for his 13th save of the season.

After a long stretch of scorless outings that led to him becoming the A's closer, Doolittle has now allowed at least one run in three of his last five appearances. The solo home run by Steve Tolleson didn't affect the outcome, though, and he set down the rest of the batters he faced to earn the save. Even with a few hiccups, Doolittle has a 2.98 ERA, 0.69 WHIP and 61/2 K/BB ratio in 42 1/3 innings and should continue to pitch well into the second half.

Sean Doolittle RP OAK 19 Days

Sean Doolittle struck out two in a shutout ninth inning to pick up his 12th save in Thursday's win over the Blue Jays.

It was a nice bounceback appearance for Doolittle, who coughed up a walkoff grand slam to Rajai Davis on Monday. He'd given up five runs over his last two outings. The lefty is now 12-for-13 in save chances and sports a 2.90 ERA, a 0.67 WHIP, and an insane 59/2 K/BB ratio in 40 1/3 innings.

Sean Doolittle RP OAK 22 Days

Sean Doolittle gave up a walkoff grand slam to Rajai Davis in the ninth inning of Monday's loss to the Tigers.

Doolittle entered the night having allowed one walk, two homers and 22 hits in 39 innings, but he gave up a walk, a homer and three hits while getting just one out in this one. Of course, everyone is allowed an off night once in a while. Unfortunately for Doolittle, it comes at a time when the All-Star rosters are close to getting chosen, and his current 2.97 ERA is a lot less attractive than his previous 2.08 mark.

Sean Doolittle RP OAK 27 Days

Sean Doolittle struck out the side in the ninth inning to pick up his 11th save in Wednesday's win over the Mets.

Doolittle made quick work of Ruben Tejada, Lucas Duda, and Anthony Recker to protect a three-run lead. The lefty is now 11-for-12 in save chances and sports a 1.95 ERA, a 0.57 WHIP, and a jaw-dropping 53/1 K/BB ratio in 37 innings.

Sean Doolittle RP OAK 1 Month

Sean Doolittle picked up his ninth save of the season Wednesday in the A's 4-2 defeat of the Rangers.

Doolittle struck out two of the three batters he faced in a perfect ninth inning. The 27-year-old left-hander boasts an absurd 48/1 K/BB ratio in 34 innings this season and has simply run away with Oakland's closer gig.

Sean Doolittle RP OAK 2 Months

Sean Doolittle slammed the door on the Orioles in the 11th inning on Friday, striking out each of the three hitters that he faced to protect a one-run advantage.

There hasn't been a better pitcher in baseball over the past five weeks, as Doolittle hasn't allowed a run in his last 16 appearances (17 1/3 innings) while posting an absolutely dominant 29/1 K/BB ratio. He looks poised to lock down the closer's job in Oakland for the foreseeable future and needs to be started in all mixed leagues.

Sean Doolittle RP OAK 2 Months

Sean Doolittle worked a perfect ninth inning to pick up his seventh save in Wednesday's win over the Yankees.

Doolittle has been nearly unhittable since the start of May. Wednesday's outing marked his 15th consecutive scoreless appearance. He is now 7-for-8 in save opportunities and has a 2.57 ERA, 0.71 WHIP, and 39/1 K/BB ratio in 28 innings.

Sean Doolittle RP OAK 2 Months

Sean Doolittle worked a perfect 10th inning to pick up his sixth save of the season in Tuesday's win over the Yankees.

The A's put up a three-spot in the top of the tenth, removing almost all pressure on Doolittle to convert the save. The lefty got a weak pop up, a strikeout, and a weak ground out in the frame. Doolittle hasn't allowed a run since April 26 and now has a 2.67 ERA, 0.74 WHIP, and a 39/1 K/BB ratio in 27 innings.

Sean Doolittle RP OAK 2 Months

Sean Doolittle picked up his fifth save of the season on Sunday, striking out all three hitters he faced in the ninth inning.

Doolittle has been a force out of the A's bullpen this season, registering a 2.77 ERA, 0.77 WHIP and 38/1 K/BB ratio over 26 innings. The hard-throwing southpaw looks poised to lock down the closer's job for a considerable amount of time and should be started in all mixed leagues at this point.