Johnson will undergo X-rays on Tuesday after being struck by a line drive in his start Monday against New Orleans, Tommy Birch of The Des Moines Register reports.
Johnson actually continued to pitch after getting struck, but he was pulled shortly thereafter once he completed the third inning. The results of his X-rays will shed some light on the extent of his injury, but as for now, manager Marty Pevey said the pitcher is only dealing with a contusion and could be in line to make his next start.