Toward the end of the season, fans, baseball alumni and active players will vote to select the final winner from among the 30 team winners.
Pence said he draws inspiration and motivation from multiple sources.
"We're competing to win for each other," Pence said, adding that his constant effort is "for my teammates. And beyond my teammates, it's for the people who put the work in behind the scenes" such as strength coaches and athletic trainers.
As Pence has mentioned on many occasions, he thrives on the competition.
"That's why I love the game," he said.
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.