Oliver dropped the ball. More specifically, it trickled out of his hand while he was idly spinning it. He was called for a balk and it allowed Ezequiel Carrera to score while Lou Marson moved into scoring position.
"It slipped out of my hand," Oliver said.
Oliver has been a professional pitcher ever since the Rangers drafted him in the third round of the 1988 First-Year Player Draft, but he said that not once in the preceding 24 years had something like that ever happened to him.
"You never know with baseball, anything can happen," Oliver said.
The runner who advanced to second ended up scoring on Michael Brantley's single later in the at-bat.
"I knew it was a balk, so you just say 'Oh well,'" Oliver said. "It just slipped out. It was crazy, it couldn't have happened when there was a guy on second base or first base or no one on, the guy had to be on third base. It's funny how it works out that way."