"I ran for a ball, caught it and smashed into the wall," Blanks said when asked to recall the sequence that ended his day. "My sunglasses gave it a pretty good slice. I was happy I hung onto it."
First baseman Jesus Guzman moved from first base to left field and Yonder Alonso entered the game at first base after Blanks left.
"He's a little banged up, jarred," said Padres manager Bud Black. "But he's going to be fine. He made a great catch."
Blanks tracked the Arias ball all the way off the bat but didn't account for where he was in relation to the wall.
"As I'm about to catch it, I think I'm running out of space," he said.
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.