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2025-26 Men's Swimming & Diving Roster

Mark Seliger Photography

Jack Greiner

  • Class Senior
  • Position IM/Back/Free
  • Height 6-2
  • Hometown New Canaan, Conn.
  • High School New Canaan

Biography

HONORS & AWARDS:
• Patriot League Academic Honor Roll (2022-2023, 2023-2024, 2024-2025)
• Eastern Athletic Communications Association Academic Honor Roll (2024-2025)

AS A JUNIOR IN 2024-2025:
• Earned Team MVP honors 
• Named to the Patriot League Academic Honor Roll
• Selected to the Eastern Athletic Communications Association Academic Honor Roll
• Set new school records in the 100-yard backstroke (50.33), 200-yard backstroke (1:46.85) and 400-yard individual medley (3:54.57) at the Patriot League Championship
• Placed 10th in the 400-yard individual medley and 11th in the 200-yard backstroke at the Patriot League Championship
• Also swam a leg on the school record-setting 200-yard medley relay (1:29.80), 400-yard medley relay (3:19.80) and 400-yard freestyle relay (3:01.58) teams at the Patriot League Championship
• Received Hilton Garden Inn Crusader of the Week honors following the Patriot League Championship
• Broke the school record in the 200-yard individual medley (1:51.31) at the U.S. Open Championship
• Received the Justin Ferris Award as the Worcester City Championship Male Swimmer of the Meet, after breaking meet records in the 1,000-yard freestyle (9:46.47), the 200-yard butterfly (1:54.82) and the 500-yard freestyle (4:42.77)

AS A SOPHOMORE IN 2023-2024:
• Selected to the Patriot League Academic Honor Roll
• Broke the school records in the 200-yard freestyle (1:38.00) and the 500-yard freestyle (4:27.93) at the Patriot League Championship, in addition to swimming a leg on the school-record setting 800-yard freestyle relay team (6:39.79)
• Set new Hart Center Pool records in the 200-yard freestyle (1:40.75) and the 400-yard individual medley (4:03.00) against Connecticut College
• Placed first in the 200-yard freestyle (1:42.55) and the 200-yard backstroke (1:55.56) against Maine
• Finished second in the 200-yard freestyle (1:43.98) and the 200-yard backstroke (1:54.83) against Boston University 

AS A FRESHMAN IN 2022-2023:
• Received the team’s Most Improved Award
• Earned a spot on the Patriot League Academic Honor Roll
• Had three top-five finishes at the Harold Anderson Invitational 

HIGH SCHOOL & CLUB:
• Competed for four years on varsity under head coach Katherine Munson
• Team captain as a senior
• Earned first team All-State and second team All-Fairfield County Interscholastic Athletic Conference honors
• Team won the state championship during his freshman and senior years
• Member of the school record-setting 400 freestyle relay team in 2022
• Played two years of varsity soccer under head coach Luke Green
• Competed for the New Canaan YMCA Caimans under head coach Brian Fazzino

PERSONAL:
• Parents, Eric Greiner and Siobhan Casey, are both Holy Cross graduates
• Majoring in Economics and Religious Studies

Historical Player Information

  • 2022-23Freshman

    IM
    6'1" 0 lbs
  • 2023-24Sophomore

    IM
    6'0" 0 lbs
  • 2024-25Junior

    IM
    6'0" 0 lbs
  • 2025-26Senior

    IM/Back/Free
    6'2" 185 lbs
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