"It went well, so we'll see how he feels tomorrow," manager Bob Melvin said. "You have to take that one day by day, but we were encouraged to see him throw all his pitches. He has a high intensity level in everything he does, so we came away encouraged."
Anderson, recovering from a strained right oblique, threw 50 pitches before Monday's game against the Rangers, with 30 coming in a warm-up session and 20 coming in simulated innings. Both Anderson and Melvin said Tuesday's recovery day will be a big indicator of when he'll be able to return, having pitched off a mound for the first time Monday since he went down with the injury Sept. 19.
The other likely option besides Anderson to pitch in the play-in game would be rookie Tommy Milone.
"I felt good today and my stuff was good," Anderson said. "It's a big day tomorrow, and I'll have my bullpen [Wednesday]. We have multiple options [for Friday], which is a good thing to have. I'll just control what I can control, and then we'll go from there."
"There's always that possibility, but we don't want to get ahead of ourselves," Melvin said. "We certainly don't want to push a guy if we feel like there's lingering soreness in that area. To this point there isn't, but you never know how he's going to feel after throwing a bullpen where he's throwing pretty hard."