"It feels a little achy," Bass said before Friday's game against the Mariners at Petco Park.
Bass, who left Wednesday's start against the Rangers after allowing one run in five innings, visited with Padres team physician Dr. Heinz Hoenecke on Thursday.
Bass was to see another doctor at some point on Friday evening, according to Padres manager Bud Black.
"We're going to see how it goes the next few days," Black said. "We'll monitor it the next day or two and hopefully will be more clear on the direction of our pitching staff."
- 142 wins
- 110 wins
For now, Bass is scheduled to make his next start against the Astros in Houston on Tuesday, though that could certainly change.
Bass said that soreness he was feeling on Friday was different than the typical soreness he feels following a start.
"Usually, it's gone by now," he said.
The Padres currently have five starting pitchers on the disabled list: Tim Stauffer (strained right elbow), Dustin Moseley (strained right shoulder), Cory Luebke (reconstructive elbow surgery), Joe Wieland (strained right elbow) and Eric Stults (strained left lat muscle).