ISTANBUL — Ryan Lochte won two more races at the short-course world championships on Sunday, finishing the event with six golds and one silver. The result matched his medal total from the last championships, in Dubai in 2010.

Lochte won the 100-meter individual medley a day after he broke the world record in the event. The five-time Olympic swimming champion finished in 51.21 seconds, ahead of Kenneth To of Australia, and George Bovell III of Trinidad and Tobago. To started well and led at the halfway mark. He held off Lochte over the breaststroke leg, but the American acc­elerated in the freestyle to move ahead.