Miguel Gonzalez, who has been on the disabled list since May 9 (retroactive to May 4) with a blister on his right thumb, will start against the Yankees on Tuesday. He said it’s been difficult to not be able to pitch in a game while not really being injured.

“I’ve been telling the guys that it is frustrating not to be out there because of a blister,” said Gonzalez, who is 2-2 with a 4.58 ERA in six starts this season. “And it’s not an injury or anything like that. You just have to sit down and wait for it to heal.”

Since he threw 80-plus pitches in a simulated game Friday and the blister appears to be healed, Gonzalez said he believes he’ll be able to pitch as long as he is needed on Tuesday.

It’s also no coincidence that he is starting against the Yankees, whom he has faced three times in the regular season — posting a 2-1 record and 2.75 ERA. That doesn’t include his one-run, seven-inning gem against New York last Oct. 10 in Game 3 of the American League Division Series. All four of those appearances have come at Yankee Stadium. He has never faced the Yankees at Camden Yards.

So what has been his secret in facing the Bronx Bombers?

“Stay focused. Pitching every pitch with a purpose and following [catcher Matt] Wieters with whatever he throws down,” Gonzalez said. “I think having that confidence is the most important thing.”