What happened: Philadelphia Phillies designated hitter Kyle Schwarber and Chicago White Sox shortstop Colson Montgomery are nearing the all-time single-season strikeout record. Both carry 216 strikeouts into the final week, trailing Mark Reynolds' mark of 223 set in 2009.

Why it matters: The strikeout volume comes as both teams lean on their power production in tight playoff races. The Phillies are fighting for National League wild-card positioning, while the White Sox are competing with the Cleveland Guardians for the American League Central crown.

What to watch: Both sluggers will continue to see regular at-bats as their clubs finalize postseason positioning.