Pitching coach Rick Kranitz confirmed that the decision will ultimately come down to those two guys, with the team's other long man, Jason Berken, pitching well enough out of the 'pen that the Orioles don't want to move him.
Interim manager Juan Samuel said Saturday's starter is still undecided, but added that the team would "probably call somebody up." That somebody would be Tillman, who started in Norfolk on Monday -- tossing a complete-game one-hit shutout -- and would be right on schedule for Saturday.
Although Tillman has made just three starts in Triple-A since being optioned, Kranitz said that if the team recalls the young right-hander, it wouldn't be perceived as rushing him.
"There's a lot of guys who go up and down from Double-A and Triple-A and get up here and might stub their toe. I expect [Tillman] to come up and do exactly what he's been doing in Triple-A," Kranitz said. "There's going to be a time when it translates over. To me, there's no better time to bring a guy up [than] when they are pitching well."
In three starts since his demotion, Tillman is 3-0 with a 1.66 ERA and has allowed just 10 hits and five walks while striking out 13 in 21 2/3 innings.