Diaz ended the day with three hits and is now batting .381 in 11 Cactus League games this spring for the Tribe.
On the spring, Corbin has amassed 17 strikeouts and just three walks in 18 1/3 innings, posting a 3.44 ERA in five starts. Against Cleveland, the left-hander was charged with two runs on four hits in five innings, ending with three strikeouts and no walks.
"I feel great. I feel ready to go," Corbin said. "If the next one was the regular season, I'd be ready."
Indians starter Josh Tomlin also delivered a solid five-inning performance in his march toward the Opening Day rotation.