Player Page

Sean O'Sullivan | Starting Pitcher

Team: Philadelphia Phillies
Age / DOB:  (27) / 9/1/1987
Ht / Wt:  6'1' / 253
Bats / Throws: Right / Right
Contract: view contract details

Latest News

Recent News

Sean O'Sullivan was demolished by the Mets on Wednesday, allowing seven runs in 5 2/3 innings en route to a loss.
Five of the runs came on four home runs, including two to Lucas Duda and another to opposing pitcher Noah Syndergaard. O'Sullivan gave up 11 hits in total while walking one and striking out two. He had pitched well in May, but he has always had an issue with the long ball so Wednesday's outing is no surprise. O'Sullivan is now 1-4 with a 4.81 ERA, a 1.31 WHIP, and an 18/8 K/BB ratio in 33 2/3 innings. He'll have to deal with the Reds in a home start next. May 27 - 3:56 PM

Highest Searched Players over the last 7 days

Player News


Sean O'Sullivan delivered a quality start in Friday's loss to the Nationals, surrendering just two runs on five hits over his six innings of work.

O'Sullivan punched out three on the night while walking one. He allowed a solo homer to Bryce Harper in the second inning and an RBI double to Ian Desmond in the sixth, but that was the extent of the damage. The right-hander will carry an impressive 3.54 ERA and 1.14 WHIP into Wednesday's start against the Mets in New York and could be worth a look as a streaming option in mixed leagues.
May 22 - 9:56 PM

Sean O'Sullivan got the win after tossing six shutout innings, helping the Phillies defeat the Diamondbacks by a 6-0 score on Sunday.

O'Sullivan had only once in his career tossed six shutout innings coming into Sunday afternoon's start. He scattered five hits and a pair of walks while striking out four in what was certainly one of the best starts of the journeyman's career. With the effort, the right-hander has a 3.68 ERA with a 1.18 WHIP and a 13/6 K/BB ratio in 22 innings. He's still a very risky play for fantasy purposes. O'Sullivan will take on the Nationals in a road start the next time he toes the rubber.
May 17 - 4:40 PM

Sean O'Sullivan gave up three runs in five innings, taking his second loss of the season on Tuesday against the Pirates.

All three runs came on Josh Harrison's home run in the fourth inning to snap a scoreless tie. He was otherwise solid, scattering five hits and a walk while striking out two. The Phillies aren't looking for anything stellar from the right-hander, so his 5.06 ERA isn't very troubling. Fantasy owners, however, should skip right past his name. O'Sullivan will finish off the Phillies' homestand in a start against the Diamondbacks on Sunday next.
May 12 - 10:58 PM

Sean O'Sullivan (knee) will begin a rehab assignment with Low-A Lakewood on Thursday.

It's uncertain how many rehab outings he'll need. With David Buchanan being sent to Triple-A, it appears that O'Sullivan will retain his rotation spot for now even with Chad Billingsley (elbow) returning from the disabled list.
May 3 - 10:00 AM

Phillies placed RHP Sean O'Sullivan on the 15-day disabled list, retroactive to April 18, with left knee tendinitis.

It's not clear at this point when the injury cropped up or how long O'Sullivan might be sidelined. Dustin McGowan will take his spot in the rotation for the time being.
Apr 22 - 2:49 PM

Sean O'Sullivan took a loss Friday against the Nationals after giving up four runs over five innings.

He fanned two and walked two in the loss. All of the runs came via the home run ball, as O'Sullivan served up a three-run shot to Bryce Harper in the first inning and a solo blast to Danny Espinosa in the fourth. The 27-year-old came into this season with a 5.91 ERA for his career, so there's not a lot of upside here. He figures to get the boot when Chad Billingsley (elbow) is deemed ready.
Apr 17 - 10:12 PM

Sean O'Sullivan pitched surprisingly well opposite Max Scherzer on Sunday, holding the Nationals to two runs over six innings in a no-decision.

Not to discredit O'Sullivan, but the Nationals entered the afternoon having scored the fewest runs in the National League with nine over their first five games. They managed two over the first nine innings on Sunday. Bryce Harper homered off O'Sullivan in the first inning and Wilson Ramos added a sacrifice fly in the fourth. Overall, the right-hander gave up five hits, walked one, and struck out five. The Phillies will have O'Sullivan pitch out of the fifth slot in the rotation while Chad Billingsley continues working in the minors, which means O'Sullivan is slated to take on the Nationals again on Friday, this time in Washington, D.C.
Apr 12 - 5:11 PM

Phillies purchased the contract of RHP Sean O'Sullivan from Triple-A Lehigh Valley.

He'll start on Sunday against the Nationals and Max Scherzer in what will be a pretty one-sided matchup. O'Sullivan will be the Phillies' fifth starter until Chad Billingsley (elbow) is ready.
Apr 12 - 10:13 AM

Sean O'Sullivan will start Sunday against the Nationals.

That was the assumption already, but it's now official that he'll be the fifth starter for the time being. O'Sullivan owns a 5.91 ERA over 231 1/3 innings in the majors and isn't a fantasy option.
Apr 9 - 4:11 PM's Todd Zolecki reports that Sean O'Sullivan "is the in-house favorite" to be the Phillies' No. 5 starter.

O'Sullivan was sent to minor league camp a couple weeks ago but is now back with the big leaguers, allowing four runs over four innings in a start versus the Blue Jays Tuesday. Many figure the Phils will find someone outside the organization, although general manager Ruben Amaro was being coy Tuesday, saying he didn't have interest in any of the recently released pitchers. O'Sullivan has a career 5.91 ERA over 231 1/3 frames in the majors and would be a candidate for worst starter in the big leagues should he make the rotation. Philly hopes to get Chad Billingsley (elbow) back by the end of April, so they might not need a No. 5 starter for more than a couple turns.
Mar 31 - 8:53 PM

Phillies reassigned RHP Sean O'Sullivan and C John Hester to minor league camp.

O'Sullivan had allowed seven hits and four earned runs in 3 2/3 innings this spring in the Grapefruit League. The 27-year-old righty is organizational relief depth.
Mar 16 - 9:05 AM

Phillies re-signed RHP Sean O'Sullivan to a minor league contract with an invitation to spring training.

O'Sullivan made three appearances with the Phillies this past season and posted a 4.30 ERA over 25 starts at the Triple-A level. The 27-year-old is useful depth to have around.
Mon, Dec 22, 2014 05:18:00 PM

Phillies released RHP Sean O'Sullivan.

O'Sullivan had been outrighted off the 40-man roster earlier in the week. He had a 4.30 ERA in 25 starts at Triple-A Lehigh Valley in 2014.
Wed, Oct 8, 2014 10:35:00 PM

Phillies sent RHP Sean O'Sullivan outright to Triple-A Lehigh Valley.

The move clears him from the 40-man roster. O'Sullivan made three appearances with the Phillies this season and had a 4.30 ERA in 25 starts at the Triple-A level.
Mon, Oct 6, 2014 04:24:00 PM

Depth Charts

C1Carlos Ruiz
2Cameron Rupp
1B1Ryan Howard
2Darin Ruf
2B1Chase Utley
2Andres Blanco
SS1Freddy Galvis
3B1Maikel Franco
2Cesar Hernandez
LF1Cody Asche
CF1Odubel Herrera
RF1Ben Revere
2Jeff Francoeur
Starting Pitcher
S1Cole Hamels
2Aaron Harang
3Jerome Williams
4Chad Billingsley
5Sean O'Sullivan
6Cliff Lee
7Jonathan Pettibone
Relief Pitcher
R1Jonathan Papelbon
2Ken Giles
3Jake Diekman
4Justin De Fratus
5Jeanmar Gomez
6Mario Hollands
7Luis Garcia
8Elvis Araujo