Cashner will get that opportunity this weekend in Arizona when he's reinstated from the disabled list and the team sticks him back in the starting rotation Saturday.
"I'm ready to go … I can't wait," Cashner said.
Cashner made his second and final Minor League rehabilitation start Monday for Triple-A El Paso, as he allowed three runs on four hits in five innings.
Cashner has been on the disabled list since June 21 with right shoulder soreness. He missed three weeks in May with right elbow soreness.
Cashner said he's healthy now and his stuff felt crisp on Monday, leading him to believe that he's ready to jump back into a big league rotation.
"My breaking ball was better, my sinker was very good, I threw some good changeups," he said. "Overall ... my pitch execution was very good."
Cashner is 2-6 this season with a 2.36 ERA in 12 starts. He is eyeballing 20 starts and said he'd like to get "seven or eight" more starts before the end of the regular season.
That could be tough if the Padres follow through with their plan to utilize a six-man rotation during the final month of the regular season, though that hasn't been determined.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.