Kershaw hasn't pitched out of the bullpen during the regular season since 2009, the same season he also pitched in relief during the NL Championship Series against the Phillies.
Catcher A.J. Ellis, however, said he wouldn't be surprised to see Kershaw pitching in Game 5.
"I'm surprised Clayton didn't come in and try to start today," Ellis said. "This is how much this guy loves pitching and loves competing. But they're going to take care of him. They're going to make sure it's the right spot if they do need to use them.
"But it's Game 5.