Arenado and Blackmon were voted into the starting lineup by fans. Neither has started an All-Star game before.
Comb out your blond wig.
Gaten plays Dustin Henderson and Caleb plays Lucas Sinclair on the Netflix hit series.
The American League will get home-field advantage in the World Series after its 4-2 win over the National League.
This year's game will feature a healthy helping of the Chicago Cubs.