Claire O’Sullivan, New York Heights infielder and right-handed pitcher

Claire O’Sullivan is listed as IF, RHP (#18) for the New York Heights. She was a Round 3, Pick 14 signing, from Maroubra, Australia. Official pages use Claire O’Sullivan; this page keeps the ASCII slug. We only write what the official pages already say. More names: players.

Season final (checked Sep. 30, 2026): New York went 8–7 in the regular season (#2 seed) and lost Semifinal B to Los Angeles 2–1. Her official 2026 regular-season pitching line: 6 G, 3–1, 3.06 ERA, 16.0 IP, 10 SO. Team page: New York Heights roster and record. Bracket: WPBL playoffs.

Women’s Baseball World Cup 2027 — Australia qualified for the Rockford Finals.

New York Heights, 2026

• Team: New York Heights
• Position / number: IF, RHP, #18 — official NY roster (IF, RHP) and official player page (RHP, #18), checked Oct. 1, 2026. Not a featured card on the official NY team page.
• Status: Signed · Round 3, Pick 14
• Hometown on the roster: Maroubra, Australia
• Bats / throws: R / R (official roster and player page)

The official player page has no bio paragraph. Its 2026 regular-season lines (checked Sep. 30, 2026): pitching 6 G, 1 GS, 3–1, 3.06 ERA, 16.0 IP, 25 H, 7 ER, 11 BB, 10 SO; batting 13 G, 11-for-27 (.407), 1 HR, 8 RBI, 6 SB. For anything newer, use the official player page or stats.womensprobaseballleague.com for current stats.

Notable 2026 mentions

The official recap of New York’s 7–6 extra-inning win over Boston (recap posted Aug. 10; game dated Aug. 9) said “With O’Sullivan back on the mound,” Kate Blunt singled and Edith De Leija followed. The official player-page pitching log for Aug. 9 vs Boston lists 3.2 IP, 4 H, 1 R, 3 SO.

Heights teammates: Denae Benites · Kylee Lahners · Rakyung Kim · Valerie Perez · Jaida Lee · London Studer · Keira Izumi · Natsuki Yonetani · Alyssa Zettlemoyer · Madison Willan · Claire Eccles · Élodie Ciamarro · Jacqui Reynolds · Diana Ibarra.

Heights notes: New York. Watch: how to watch.