Overview
- Games in St. Louis and Chicago proceeded under temperatures above 90°F and high humidity that drove heat indices into triple digits.
- Cincinnati shortstop Elly De La Cruz vomited on the field in the fourth inning but returned to hit a two-run home run in extra innings.
- Seattle reliever Trent Thornton was treated for heat exhaustion and assisted off the mound during the eighth inning.
- Home plate umpire Chad Whitson left his assignment with dehydration but was cleared to return to third base the following day.
- MLB teams have increased on-field hydration and cooling measures as forecasters warn the dangerous heatwave will persist into the week.