Javier Valentin hit a pinch-hit, two-run, walk-off homer off Diamondbacks closer Jose Valverde in the bottom of the ninth inning on Sunday.
The Reds were down 4-1 with six outs left in the game, but Scott Hatteberg hit a two-run homer off reliever Brandon Lyon in the eighth to make it 4-3. After an Austin Kearns pinch-hit single with one out, Valentin delivered a blast to right to give the Reds the win. David Weathers picked up the win in relief as the club moved to 28-22 on the season.