The shot came in the bottom of the ninth inning Wednesday at Wrigley Field in Chicago. Heyward stepped up to the plate with two outs and the bases loaded. The Cubs trailed 5-3.
He went ahead in the count 2-0 against Phillies closer Adam Morgan. The lefty then tossed a called strike, before Hayward fouled off a 96.8-mph fastball. Heyward smashed his next pitch deep to right field for a 415-foot blast, according to Statcast. The ball left Heyward's bat at 97.2 mph.
"I keep saying it, but I'm trying to keep it simple, one at-bat, one pitch at a time, trying to make adjustments on the fly," Heyward told reporters.
"It's much easier said than done. I got a pitch to hit there and didn't miss it. Pitchers don't make many mistakes. I got one off a guy who's really good and has good numbers and didn't miss it."
Heyward went 1-for-5, with four RBIs, a run scored and a strikeout in the win. He is now hitting .261 with three home runs and 25 RBIs in 45 appearances this season for Chicago.
Morgan allowed 1 hit and two earned runs in 0.1 innings, taking a blown save and a loss due to Heyward's homer.