Lia Thomas, the transgender University of Pennsylvania swimmer competing on the women’s team after competing on the men’s team in years past, and Iszac Henig, the transgender Yale swimmer, capped off dominant individual performances at the Ivy League Championships on Saturday.

Thomas and Henig both competed in the 100-yard freestyle, Thomas after collecting wins in the 500- and 200-yard freestyles earlier in the week, setting pool records in both as well as a meet record in the latter. Thomas prevailed in the 100-yard freestyle finals with a time of 47.63 seconds — a pool and meet record — while Henig came in second with a time of 47.82 seconds.

On Saturday morning, Thomas finished second in the preliminary heats for the event, behind only Henig, who is transitioning from female to male and has undergone surgical, but not hormonal, treatments to aid that transition. Henig also took first place in the 50-yard freestyle on Thursday.