Burnes, 30, was 70 pitches into his 11th start of the season when he hopped in pain and mouthed to his dugout that the discomfort was coming from his right elbow. He underwent an MRI on Monday and traveled to Los Angeles later in the week to visit with orthopedic surgeon Neal ElAttrache.

Right-hander Corbin Burnes will undergo Tommy John surgery. Arizona signed Burnes to a club-record $210 million deal just less than six months ago.