One could certainly make the case that Stephen Strasburg has been the ace of the Washington Nationals in the second half of this season.
The Nats certainly hope he gives an ace-like performance in Game 2 of this World Series after the bullpen was taxed in a Game 1 win.
Scherzer struggled with command in Game 1 and the Astros hitters were very patient as they drove up his pitch count and ran him off after 5 solid innings.
As a result, Dave Martinez had to use Patrick Corbin, Tanner Rainey, Daniel Hudson, and Sean Doolittle out of the bullpen.