Reds closer Aroldis Chapman walked Yonder Alonso in the ninth inning Monday in San Diego. That proved to be a costly mistake.

Chapman couldn't record an out as Chris Denorfia pinch-hit for Will Venable in the next at-bat and homered for a walk-off win for the Padres. Chapman took his fourth blown save and the loss to fall to 3-4 on the year.

The Cincinnati closer threw eight pitches to lose the game. His ERA is at 3.02. That is back-to-back appearances in which Chapman has walked a batter and he has 21 free passes over 41 2/3 innings. Of course, he also has 70 strikeouts. Chapman has 24 saves in 28 chances.

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