Sean William Sullivan...Is a 2018 graduate of Chaminade College Preparatory in West Hills, Calif., where he was a four-year letterwinner and went 9-3 with a 1.52 ERA and 69 strikeouts in 52.0 innings as a senior...Pitched in the quarterfinals and finals of the 2016 USA Baseball National High School Invitational in Cary, N.C...Went 4-5 with a 3.68 ERA (78.1ip/32er) and 75 strikeouts in 15 starts as a junior in 2021 at the University of California...Was a 2021 All-Pac 12 honorable mention...Posted a 2.08 ERA with 48 strikeouts in 43.1 innings for the Cotuit Kettleers in the Cape Cod League in the summer of 2019; also posted a 2-0 record in the Cape Cod League playoffs...Was rated as the 138th-best player by Baseball America and 212th by MLB Pipeline in the 2021 draft...His brother, Thomas E. Sullivan, is an actor and has made appearances in The Mandalorian (Disney+), The Irishman (Netflix) and The First Lady (Showtime)…Signed by Pirates scout Mike Sansoe.
2024
Was a non-roster invitee during Spring Training...Began the season in the starting rotation with Altoona...Lost back-to-back starts to start the season... Tossed five scoreless innings in a no-decision on 4/19 at Bowie...Went 0-4 with a 4.05 ERA (26.2ip/12er) in his first six starts through 5/7...Made his first relief appearance on 5/12 vs. Somerset (Game 2) and retired all three batters he faced to earn his second professional save...Pitched seven scoreless innings on 5/16 at Akron and six shutout frames on 5/22 at Erie, but received a pair of no-decisions...Tossed 18 consecutive scoreless innings from 5/7-28...Won his first game on 5/28 vs. Portland (5ip/3er)…Posted a 2.89 ERA (28.0ip/9er) and a .200 batting average against in six games (five starts) in May...Won his second game while pitching six innings of relief (2r) on 6/14 vs. Erie...Was placed on the injured list with right shoulder soreness on 6/29 and missed remainder of the season.
2023
Spent the entire season with Double-A Altoona, where he finished with the fourth-lowest ERA (3.88) among Pirates Minor Leaguers with at least 90 innings pitched...Ranked sixth in the Eastern League in ERA, eighth in batting average against (.245), 12th in innings pitched (113.2) and sixth in WHIP (1.27)… Allowed two runs or fewer in 13 of his 21 starts…Made his Double-A debut on 4/15 at Erie, tossing 2.1 scoreless innings before hitting his pitch limit…Tossed 14.1 scoreless innings to begin his Double-A career, the longest by a Curve pitcher since Roansy Contreras threw 18.2 innings to start the 2021 season…Was placed on the seven-day injured list on 6/9 (retro to 6/8) with a calf injury (was activated on 6/16)… Made his first appearance after the All-Star break in a one inning relief appearance on 7/18 vs. Reading…Tossed his first career complete game of his professional career in a seven inning game against Erie on 8/9 in the first game of a doubleheader (was the first complete game by a Curve pitcher since Trey McGough in 2021 and first seven inning complete game since Domingo Robles in 2019…Went 6-0 with a 2.82 ERA in his final eight games (six starts).
2022
Spent his first professional season with Greensboro...Made his debut on 4/13 at Winston-Salem, allowing one unearned run in 3ip…Struck out a career-high 11 batters on 5/31 vs. Wilmington...Went 1-4 with a 4.55 ERA (57.1ip/29er) in 15 starts and 1-1 with a 5.09 ERA (17.2ip/10er) in five relief appearances...Picked up his first pro save on 5/25 at Asheville...Tossed six scoreless innings and won his first game on 6/18 vs. Hudson Valley (Game 2).
2021
Was selected by the Pirates in eighth round of the First-Year Player Draft and signed on 7/16...Did not pitch after tossing 78.1 innings during the college season for Cal.