Zach Eflin pitched five perfect innings so far for the Orioles against the Rockies, the Orioles leading 5-0 in Colorado. Eflin struck out six batters on 49 pitches, so he’s working very efficiently. It’s tough to pitch a no-hitter in the big park, but we’ll see.

Update: Jake Cave breaks up the no-hitter with an infield single leading off the bottom of the seventh inning.