< Back to Roster Augustus, Justin #11 Behler, Dave #39 Bollinger, Brock #10 Cambria, Jake #22 Church, Watson #44 Ciaccio, David #17 Collazo, Braden #20 Cook, Cole #24 Cronenberger, Bob #6 Dunleavy, Tommy #30 Fitch, Cannon #36 Henry, Nick #7 Holmes, Derek #27 Houtz, Jacob #32 Illgenfritz, Tyler #9 Kosar, Owen #3 Kovalcik, Evan #33 Kratz, Justin #12 Lichman, Josh #25 Martinez, David #4 Matta, Luke #34 Nalesnik, Jacen #19 O'Donnell, Shaun #28 Oliver, Max Patel, Arjun #8 Rader, Matt #2 Warmkessel, Quinn #1 Welch, Carter #16 Welch, Justin #5 Williamson, Sebastian #23
#23 Sebastian Williamson
Position OF · P
Bats R
Throws R
Hometown Oley, PA
Year 3
Batting Stats
Team Season Games Plate Appearances At Bats Runs Hits Doubles Triples Homeruns Runs Batted In Hit By Pitch Walks (Bases on Balls) Strikeouts Sacrifice Flies Stolen Bases Batting Average On Base Percentage Slugging Percentage On Base Plus Slugging
Team Season G PA AB R H 2B 3B HR RBI HBP BB SO SacF SB AVG OBP SLG OPS Northern Yankees 2023 11 41 36 13 12 1 1 1 4 1 4 4 2 .333 .415 .500 .915 Northern Yankees 2024 16 52 46 11 17 4 2 2 16 1 4 9 1 3 .370 .423 .674 1.097 Northern Yankees 2025 13 42 40 9 16 3 2 1 9 1 1 8 .400 .429 .650 1.079 Career 40 135 122 33 45 8 5 4 29 3 9 21 1 5 .369 .422 .615 1.037
Pitching Stats
Team Season Games Games Started Wins Losses Innings Batters Faced Hits Runs Earned Runs Hit By Pitch Walks (Bases on Balls) Strikeouts Pitch Count Walks/Hits per IP Opponents Batting Avg Earned Run Average
Team Season G GS W L INN BF H R ER HBP BB SO PC WHIP OBA ERA Northern Yankees 2023 3 1 1 5.2 30 5 3 1 1 5 13 131 1.76 .208 1.24 Northern Yankees 2024 5 1 1 1 6.2 11 10 9 3 4 8 139 2.25 9.45 Northern Yankees 2025 1 2 6 1 5 27 .50 0.00 Career 9 2 2 1 14.1 36 16 13 10 4 10 26 297 1.81 .727 4.88
Sebastion played scholastically at Oley Valley. From there he attended Potomac St, where he was a part of the baseball program. Then graduated from Rider University, where he was a part of the baseball program.
