In fortunate news for Colorado, X-rays taken immediately afterward were negative. Via the Rockies' Twitter account:
— Colorado Rockies (@Rockies) August 23, 2012
#Rockies injury update: OF Dexter Fowler suffered a sprained right ankle tonight. X-rays were negative.
Fowler was hurt after he hit a single and rolled his ankle going into second base on a throw to third. He had to be helped off the field by a pair of trainers.
His stats heading into the game reflect a breakout season: .306/.392/.499 with 12 home runs and 44 RBIs in 435 at-bats. The Rockies have been injury-addled all season long.