Max Muncy was at the plate and launched a fly ball to deep right field. Mazara was off and running toward the corner.
"I knew he put a good swing on it and hit it pretty good," Mazara said. "I put my head down. I was running pretty good."
Mazara got to the ball just before he hit the wall. He got his glove on it but couldn't hold on, and the ball fell in for a double, ending the no-hit bid.
"It just popped out of my glove," Mazara said. "I haven't seen the video. When I saw the wall, I just kept running until I got to the wall. He hit it pretty well. I gave it a good effort."
It marked the fifth time in club history a Rangers pitcher had taken a no-hitter into the ninth without completing it.
"It is what it is," Lewis said. "You can't throw up your arms and get mad. You have to get back to work. I know he is busting his tail out there."
After Muncy's double, Lewis retired Billy Burns on a grounder to short for the first out of the inning. Coco Crisp followed with a line drive to left, but Ryan Rua just missed making a tremendous diving catch. Instead, it fell for a double and Muncy scored to end Lewis' bid for a shutout.
Rua had saved the no-hit bid in the eighth with a terrific catch on Marcus Semien's deep drive to left.
"In those situations, you're just trying to do everything you can for him," Rua said.
Lewis was so dominating through seven that the closest the Athletics had come to a hit was on a bunt. Muncy tried to reach on a bunt in the sixth when the game was still scoreless, but Lewis pounced on it and threw out Muncy at first.
Lewis said he didn't have a problem with Muncy trying to bunt for a hit in that situation.
"The score was 0-0; I'm not worried about it," Lewis said. "He's trying to get on. It's not like it was the ninth inning. He bunted back to me, and I got a quick out."
The best defensive work of the day was done by catcher Bobby Wilson, according to Lewis.
"A great job by Bobby," Lewis said. "He and I worked well together. I think I shook him off once all day. Hats off to him. He was the guy behind the plate. I was just throwing pitches."
T.R. Sullivan has covered the Rangers since 1989, and for MLB.com since 2006. Follow him on Twitter @Sullivan_Ranger and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.