Well Armed, who finished last in the Grade 2 San Diego Handicap last Sunday at Del Mar in his first start since his victory in the Dubai World Cup, was found to have a small chip in his left front ankle and will undergo surgery "in the next few days," said trainer Eoin Harty on Thursday. Harty said Well Armed was sent to the Alamo Pintado Clinic near Solvang, Calif., where the chip was discovered. Well Armed, a 6-year-old gelding owned by WinStar Farms, won the Dubai World Cup by 14 lengths in March. Last year, he won the Grade 1 Goodwood and Grade 2 San Antonio at Santa Anita and the San Diego at Del Mar.