Maddon praised Keppinger for his ability to put the ball in play, and said he would be invaluable with runners on base, especially with someone like Desmond Jennings as the leadoff hitter.
"You know he's going to move the baseball," Maddon said. "He's a contact guy. He's never really in trouble."
Keppinger has a career .281 average and .332 on-base percentage in seven big league seasons.