Skip To Main Content

Holy Cross Athletics

Scoreboard

Mobile Scoreboard

2025-26 Men's Swimming & Diving Roster

Mark Seliger Photography

Jack Greiner

  • Class Senior
  • Position IM
  • Height 6-0
  • Hometown New Canaan, Conn.
  • High School New Canaan

Biography

CAREER HONORS: 
2022-23 Team Most Improved Award 

AS A SOPHOMORE IN 2023-24:
  • Registered a pair of individual first place finishes in the 200-yard freestyle (1:42.55), the 200-yard backstroke (1:55.56), a pair of relay wins in the 200-yard medley (1:34.91) and the 400-yard freestyle (3:08.97) in the win against Maine (11/11).
  • Finished in second twice, in the 200-yard freestyle (1:43.98) and in the 200-yard backstroke (1:54.83) against BU (12/2). 
AS A FRESHMAN IN 2022-23:
  • Placed 2nd in the 50-yard freestyle (22.34) at the Patriot League Championship (2/15-18).
  • Was part of two school-record setting relays in the 400 freestyle and 800 freestyle relay.
  • Had three top-5 finishes at the Harold Anderson Invitational (11/18-20) with two personal-best times. 
  • Team Most Improved Award
BEFORE HOLY CROSS:
  • Competed for four years on varsity under head coach Katherine Munson.
  • Was a team captain his senior year.
  • Earned Second Team All-FCIAC and First Team All-State honors.
  • Team won states during his freshman and senior year.
  • Set the school record in the 400 free relay (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:
  • Son of Eric Greiner and Siobhan Casey both 1993 graduates of Holy Cross.
  • Has three siblings; Finn, Maggie and Campbell.
  • Cousins Patrick Jessop '20 and Colin Jessop '22 both attended Holy Cross.
  • Majoring in econonmics and political science. 

Historical Player Information

  • 2022-23Freshman

    IM
    6'1"
  • 2023-24Sophomore

    IM
    6'0"
  • 2024-25Junior

    IM
    6'0"
  • 2025-26Senior

    IM
    6'0"
Skip Ad
Skip Sponsors