It's only a semifinal race, but all eyes at the swimming world championships Wednesday will be on Léon Marchand as the Frenchman goes after the world record in the 200-meter individual medley.

Aqua Black Lewis Clareburt qualifies for 200 metres individual medley semi-final at world championships with Olympic hero Leon Marchand.

Katie Ledecky has ceded a tiny bit of ground in other events, but she's still unbeatable in the 1,500-meter freestyle.