Aroldis Chapman has been Boston’s bullpen linchpin, posting a 0.98 ERA and piling up 52 strikeouts over 30 innings since May 30. He just shattered two records: four strikeouts in a single inning and 50 straight batters retired. Boston extended him, signaling confidence for next year, while Yoshida’s leadoff role adds run-creating upside. Kenley Jansen’s exit opened save opportunities, with Dustin May floated as a deadline-era option. Diamondbacks were on the wrong end as Chapman’s dominance continued.