When last we checked in on the 1989 Cubs, they were finishing a stretch where they played 18 games in 17 days. They came passed that test with flying colors, winning 13 of them. Looking at an even larger chunk of games, they won 20 of 28. That was enough to move into first place and to build a division lead of 2½ games. Specifically, they swept the Expos to start the previous week. The Expos had been the front runner for months, but the Cubs won the battle of two surprising contenders. For the Expos, it was the start of a return to Earth, and for the Cubs, it was the launching.