Yale's Henig twice crushed UPenn's Thomas Saturday at the Ivy League meet in Philadelphia, the Daily Mail reports.
Henig, 20, cruised with ease by his opponents, winning the 100-yard freestyle in 49.57 seconds, the outlet said.
Meanwhile, Thomas was "barely trying" when she won the 500-yard freestyle by one second, along with the first of her four races by just two seconds, according to the Daily Mail.
Henig, a California native, had his breasts removed but is putting off hormone treatments to finish his senior career on Yale's women's swim team.
Thomas caused outrage on Twitter last month for setting American records as a male-to-female swimmer on the UPenn women's team at a meet in Ohio.
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