Aroldis Chapman’s unprecedented run continued to defy convention on Sunday.

The Boston Red Sox closer recorded his 29th save of the season to secure a 7-4 victory over the Arizona Diamondbacks. The 37-year-old has now gone 17 straight appearances without allowing a hit since July 23, and he’s issued just one walk since the start of August.

Chapman still managed to up the ante on his dominance Sunday, registering four strikeouts in his lone inning of work. And yes, an inning still constitutes three outs.

Chapman began the final frame by striking out Arizona second baseman Blaze Alexander. The All-Star also fanned Ildemaro Vargas, but the pinch-hitter reached first base when Red Sox catcher Carlos Narváez couldn’t corral a strike three in the dirt.

Undeterred by the wild pitch, Chapman s

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