By C. Trent Rosecrans
The Orioles are hoping Guthrie, pictured, can still make his start Wednesday against the Tigers, but if not, Brad Bergesen would replace him.
"He started running a fever yesterday," manager Buck Showalter told reporters, including MASNSports.com's Roch Kubatko . "We thought we got it under control. Talking to him last night when we got here, he felt pretty good, but somewhere between that and today, his fever spiked back up. He's over there now trying to get a grip on what we're dealing with.
"I'm not sure if he'll be here or not. I expect him to probably come in and give us an update on where he is with it, but right now he's still tentatively scheduled to pitch on Wednesday. We'll see what the next couple of days bring. We'll probably make a decision on that tomorrow."
Bergesen had been expected to be the team's fifth starter, but started the season in the bullpen because the team wouldn't need a fifth starter until April 10.
The Orioles already had to mess with their rotation when Brian Matusz went on the disabled list on Friday due to back pain. To make up for Matusz's injury, the team moved Chris Tillman up a day to start on Saturday against Tampa Bay, while the team called up Zach Britton from Triple-A to start Sunday against the Rays.
Even with the shuffling, the Orioles starters have been good through three games. Guthrie went eight shutout innings on opening day, Tillman didn't allow a hit in six innings on Saturday and Britton gave up just three hits and a run in six innings yesterday. Jake Arrieta makes his first start of the season this afternoon against the Tigers.@cbssportsmlb on Twitter or subscribe to the RSS feed.