WASHINGTON, July 6 (UPI) -- Tyler Covin homered twice Friday and Colorado held Washington scoreless until the ninth to cool off the Nationals 5-1.
Washington had won four in a row and seven out of nine while moving a season-best 16 games above the .500 mark.
Colvin hit a solo shot in the second and added a two-run blast in the fourth, running his total to 13 home runs for the year.
Dexter Fowler then tacked on a solo homer in the seventh and Michael Cuddyer drove in the final Colorado run with a sacrifice fly in the eighth.
Starter Drew Pomeranz (1-3) lasted 6 1/3 innings to get the victory. It was his third win in the majors, having gone 2-1 with the Rockies last year.
Betancourt retired all three men he faced to pick up his 14th save.
Stephen Strasburg (9-4) gave up three runs, one of them unearned, on eight hits in six innings to take the loss. Strasburg has dropped his last three starts.