Left-hander Jason Vargas will start Game 4 for the Kansas City Royals in Game 4 of the American League championship series on Tuesday.
It could be the series clincher as the Royals lead the best-of-seven series 2-0. Game 3 is Monday in Kansas City.
In one American League Division Series start, Vargas held the Los Angeles Angels to two runs over six innings in a 3-2 victory for the Royals.
Vargas, 31, went 11-10 with a 3.71 ERA and 1.27 WHIP over 187 innings in the regular season.
Baltimore has not named a starter for Game 4.
Left-hander Wei-Yin Chen will start Game 3 for the Orioles against Royals right-hander Jeremy Guthrie.