Pirates fall on walk-off after Bell ties it in 9th

Josh Bell hammers a game-tying two-run home run over the left-field wall in the 9th, tying the Pirates' rookie record with his 26th homerWASHINGTON -- They have been the two best bullpens in the Majors in September, as the Nationals and Pirates entered Thursday's game first and second, respectively, in relievers ERA this month. And yet, the Bucs struck for two in the top of the ninth inning to tie the game before Alejandro De Aza singled home the game-winning run for a 5-4 Nats walk-off victory.

De Aza also drove in the go-ahead run in the seventh inning before he came up with the game-winning hit in the ninth against Pirates right-hander Daniel Hudson. De Aza's heroics were made possible…