The 2025 IHSAA boys swimming season has begun! IndyStar is highlighting the top swimmers to watch in Central Indiana.

Alex Koo, Fishers

The junior had an impressive sophomore year and will likely dominate once again in 2025. Koo finished sixth in the 50 and 100 free at state last year. He was the lead-off swimmer in the 200 free relay at state last season, in which Fishers captured second place. Koo anchored his school to sixth place in the 200 medley relay at state in 2025.

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