On August 5, 1989, Jerome Walton’s ninth inning single to right field scored Shawon Dunston as the go-ahead run in a 4-2 come-from-behind victory at Pittsburgh.
The thrilling win tied Chicago (63-47) with Montreal atop the NL East Division.
Despite a heart-breaking 5-4 setback in 18 innings the following day vs. the Barry Bonds led Pirates, the Cubs returned to Wrigley Field and promptly swept the Expos three games to none.
It was a signature series win for the North Siders, turning its first place tie into a comfortable 3.0 games lead in the division. As it turns out, the Cubs never relinquished its top spot for the remainder of the regular season.
Walton, meanwhile, was swinging a red-hot bat during this five game stretch hitting at a .458 clip (11-for-24), including a 5-for-12 performance against Montreal pitching, all while running his hitting streak to 20-games.