The Twins lead the majors in runs and homers. Yet they have gone Under in their last seven games. Surprised? Don't be. The Twins have a long injury list that is hurting their offense right now. 
Minnesota has been minus Nelson Cruz, Byron Buxton, Miguel Sano, Marwin Gonzalez and Max Kepler departed the Twins' last game two days ago with an upper chest injury. The result is Minnesota is averaging 2.6 runs during its past five games.
The Nationals were swinging very hot bats until the past eight days. If you discount a nine-run game against the Braves in their previous game, the Nationals are averaging 3.2 runs in their last four games. 
There is a strong Under trend when Washington plays American League teams. The Under has cashed in 71 percent of the Nationals' last 45 Interleague games. 
The pitching matchup is Anibal Sanchez versus Jose Berrios. Sanchez didn't pitch well in his last outing. Prior to that, however, Sanchez had a 3.16 ERA in his previous 17 starts. He has a respectable 3.44 ERA on the road this season. Sanchez is a heady veteran who knows how to pitch and knows something about the Twins having pitching briefly for them during spring training last year. 
Berrios is an All-Star. He's given up three or fewer earned runs in 15 of his last 18 starts. The Nationals have never faced him.