Ricky Romero underwent x-rays on his left forearm after leaving in the fourth inning of Friday's loss to the Mariners. The x-rays were negative, but Romero could be in jeopardy of missing his next start. "I don't know, we'll see. It's a little stiff right now," he said. With Josh Johnson landing on the DL this week, the Blue Jays can ill-afford another injury to their starting rotation.