James Paxton will miss at least one start after being struck by a line drive in Tuesday night's loss.

The Seattle Mariners said Paxton has a bruised left forearm after tests were negative.

"We'll know more in the next coming days and how the swelling is," Scott Servais said. "It's unfortunate, but looking on the bright side, we probably got a little lucky. It could have been a lot, lot worse."

Felix Hernandez was demoted to the bullpen last week amid a down season. He replaced Paxton on Tuesday night and allowed two runs in 5 2/3 innings. He'll likely take Paxton's next turn in the rotation.