On June 30, 1997 In the resumption of interleague play, the Cubs set the tone by edging the American League Royals, 8 – 7. Dave Clark’s three-run, pinch-hit home run with two outs in the 8th tops off a five-run inning. Jeff King hits his 5th homer against National League pitchers for the Royals.
Source
Baseball Reference June 30