Game 4 between the Royals and Baltimore Orioles will take place on Wednesday at 4:07 p.m. ET. Kansas City leads the series 2-0 heading into Tuesday night's Game 3.
Game 3 was originally scheduled to be played Monday, but was postponed due to rain.
In his first career postseason start, Vargas gave up three hits and two earned runs in six innings to help defeat the Los Angeles Angels in Game 1 of the ALDS.
In the regular season, Vargas went 11-10 with a 3.71 ERA and 1.273 WHIP.
The Orioles have not yet announced a Game 4 starter.
Jeremy Guthrie will start Game 3 for the Royals, while Wei-Yin Chen takes the mound for Baltimore.
- Molly Geary