Time for round two of Phelps vs. Lochte.

The United States' two biggest male swimming stars go at it a second time at the London Games, with the latest coming in the 200-meter individual medley final on Thursday.

Michael Phelps won his record-setting 19th career Olympic medal and 15th gold in the 4x200-meter freestyle relay Tuesday night. Lochte is the world record holder in the 200 IM.

Lochte beat Phelps earlier in these Olympics with a resounding win in the 400 individual medley.

— Jon Krawczynski — Twitter http://www.twitter.com/APKrawczynski

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EDITOR'S NOTE — "Eyes on London" shows you the Olympics through the eyes of Associated Press journalists across the 2012 Olympic city and around the world. Follow them on Twitter where available with the handles listed after each item.