Sean Grieshop Cracks 15-16 500 Free National Age Group Record

Sean Grieshop

FEDERAL WAY – Nitro’s Sean Grieshop dropped the hammer in the men’s 500-yard free at the Speedo Winter Junior Nationals as he finished the night with a meet record and the 15-16 U.S. National Age Group mark.

Grieshop scorched finals in 4:16.59 for the win.  That time lowered the 4:17.45 set by NOVA’s Townley Haas last year as the meet record.  That time also stood as the 15-16 U.S. National Age Group mark.

Grieshop has had a tremendous year so far, taking part in the Junior Pan Pacifics Championships, as he continues his quick rise up the distance freestyle ranks in the U.S.

Santa Clara’s Aidan Burns finished second overall in 4:21.17, while Tennessee’s Walker Higgins wound up third in 4:23.13.

Michael Messner (4:23.40), Jeff Newkirk (4:24.08), Logan Houck (4:24.43), Jerad Kaskawal (4:29.34) and Roger Kriegl (4:31.58) also participated in the championship field.

Scottsdale’s Thomas Ottman turned in a lifetime best effort of 4:23.28 in the B final.  That swim blasted the 4:26.91 he set this morning during prelims.

Nitro’s Taylor Abbott posted a second-place time of 4:24.18 in the consolation, while Parks Jones claimed third in 4:25.07.

Jack Thorne (4:28.60), Aaron Apel (4:29.79), Christopher Miller (4:29.90), Joseph Lastelic (4:30.37) and Sam Kline (4:30.85) raced to the rest of the B final finishes.

Parkland’s Sam Magnan clipped his personal best in the 500 free with a 4:25.03 to win the C final.  That’s just under his 4:25.05 from high school states back in March.

Chris Yeager of First Colony put up a time of 4:26.24 to take second overall in the bonus, while John Thomas Larson finished third in 4:28.36.

Max Miranda (4:28.56), Lucca Martins (4:29.79), Hayden Burns (4:30.86), Brooks Fail (4:32.07) and Riley Hickman (4:35.69) grabbed the rest of the bonus field finishes.





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  • Women’s 500 free
  • Men’s 500 free
  • Women’s 200 IM
  • Men’s 200 IM
  • Women’s 50 free
  • Men’s 50 free
  • Women’s 400 medley relay
  • Men’s 400 medley relay

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