LOS ANGELES >> The Dodgers might have to go just one more time through their starting rotation before getting their ace back.Clayton Kershaw threw a bullpen session Wednesday, his second since going on the DL with a mild herniation of a disc in his lower back. That session lasted "upwards around 60 pitches," according to Dodgers manager Dave Roberts, and Kershaw will follow it up by throwing to hitters in a simulated-game setting on Sunday in Los Angeles.