In just his second start of the year, Ross Detwiler did enough to keep the Nationals in the game - especially after they knocked Rockies starter Esmil Rogers out with 112 pitches in 5 1/3 innings. But whereas the Rockies were able to survive a night where their starter couldn't get through the sixth inning, the Nationals were once again unable to do it.
They gave up four of their six runs after Detwiler left the game, falling 6-3 to the Rockies and losing their second straight game on Thursday at Coors Field.
The Nationals had scored just one run until the ninth inning, when Ryan Zimmerman drove in two runs with a double. But the two they scored would have been enough, had their bullpen been able to hold the Rockies scoreless once Detwiler left the game. Collin Balester allowed one in two innings, and Ryan Mattheus gave up three more runs in his inning of work.
It's been an off-and-on problem for a bullpen that's been pushed into more work in the second half of the season. And even with eight relievers, it seems at times like the Nationals' bullpen is overworked. On Thursday night, that might have cost them a win.