He came across a woman in distress, apparently preparing to jump off the bridge.
He said he locked his arms in hers and offered to buy her lunch, desperately trying to coax her back to safety.
"At that point she said, 'Just let me go, it'll be better off that way.' And I said, 'No, let me buy you lunch, we'll talk this over, it'll all work out,'" Tumpane said.
During the press conference, he said between innings he would look at the Roberto Clemente Bridge over the center field wall.
"This was an unbelievable day and I'm glad to say that she can have another day with us," Tumpane said. "This isn't about me. I appreciate the opportunity but honestly, this is for her and people that care about her. I'm just glad it's a positive story and not a sad story."