sentences:  On May 8, 2018, Heyward again went on the disabled list due to concussion protocol after attempting a game-saving catch of a Dexter Fowler 14th inning home run.On June 6 Jason Heyward hit a walk-off grand slam home run with two outs in the bottom of the 9th to give the Cubs a 7-5 win over the Philadelphia Phillies.At the All-Star break Heyward's stats for the year showed continuing improvement over his previous time with the Cubs.