05/02/2011 12:52PM

Kentucky Oaks: R Heat Lightning out

Bob Coglianese
R Heat Lightning, wi th John Velazquez riding, wins the Gulfstream Oaks.

R. Heat Lightning will not run in the Kentucky Oaks on Friday, trainer Todd Pletcher said Monday.

Pletcher said heat in a knee was detected, forcing her withdrawal.

R. Heat Lightning won the Gulfstream Oaks by 8 1/4 lengths in her last start and was considered one of the leading contenders for the Oaks.