Guthrie, who was sent home Monday afternoon after suffering from flu-like symptoms, is now scheduled to start on Saturday night on 13 days' rest after his previous start was also pushed back due to the right-hander suffering the effects of a dead arm.
"He looks a lot better today, physically," Trembley said. "He's going to have to throw before he pitches on Saturday so we'll see how he is. ... I really didn't expect him to be here today, to be honest with you."
Guthrie began feeling ill after the Orioles game Saturday night against the A's and that, combined with his earlier arm soreness, has led to the longest layoff of the season for the Orioles ace, who had made all of his starts prior to the recent setbacks. On Tuesday, though, he was out in center field shagging fly balls during batting practice, looking to be back on the road to full health.
Given how valuable Guthrie is to the Orioles and the fact that there are just over two weeks left in the season, shutting the right-hander down could have been a legitimate option if the arm issues were to persist. But Guthrie insisted on Tuesday that the arm was no longer an issue and said he'd like to make as many starts as he can during the remainder of the season.
"Absolutely," Guthrie said when asked if he'd be able to start on Saturday. "We'll see how the throwing program goes and obviously with the time off -- the arm not feeling great -- I think more than anything, we're just trying to play it safe at this point. Figure, why push it, why rush me when the arm wasn't feeling great? I think it's been 12 or 13 days since I pitched, so at this point, all of this stuff just kind of compounded.
"[My arm] feels a little bit better, still not where I'd love it to be, but we've run a number of tests and there's nothing wrong with it and it's just a little soreness and a little tiredness that comes with pitching."
Guthrie, who is 10-11 with a 3.57 ERA, has already pitched a career high in innings this season with 186 2/3, but he noted on Tuesday that getting to that 200-inning benchmark is a real motivator for him at this point in the season -- although not something he'd go after if there was a risk of serious injury.
"That was a consideration," he said of shutting it down for the season. "But I think we've done a number of things with the trainers and the doctors that we're not concerned about the arm anymore. We're just concerned about it feeling well enough to go out there and pitch and not overcompensate and cause something to happen. ... My goal is to come in and make as many starts as I could, all of them hopefully. I'd love to pitch 200 innings so those are things that keep me working right now."
Amanda Comak is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.