Scherzer's former team, the Detroit Tigers, have the seventh-best World Series odds at 14/1.
According to Bovada, the Angels were the only other team besides the Nationals affected by the Scherzer signing.
Scherzer, 30, posted a 3.15 ERA with 252 strikeouts and 63 walks over 220 innings with the Detroit Tigers last season. He made his second career All-Star appearance and finished fifth in American League Cy Young Award voting, one year after winning the AL Cy Young.
Scherzer broke into the Major Leagues in 2008 with the Arizona Diamondbacks before he was traded to the Tigers in December 2009. Over his seven MLB seasons, Scherzer is 91-50 with a 3.58 ERA, 1,321 strikeouts and 389 walks in 1,239.1 innings.
- Mike Fiammetta