All-Star right-hander Corbin Burnes of the Arizona Diamondbacks is set to undergo Tommy John elbow surgery, ending his season early in the first year of a $210 million, six-year contract. It’s the richest deal in club history. The 30-year-old exited his most recent start with Arizona leading 3-0 in the top of the fifth inning Sunday. After Burnes allowed a single by CJ Abrams with two outs, he gestured toward the dugout with his glove and yelled in frustration. The injury will end a four-year run of All-Star appearances for Burnes.