Interleague play has been with us for 28 years (29 seasons), since 1997. It’s not new, nor is it going away.
The Cubs and White Sox have played at least one series against each other in all 29 of those seasons, now at 149 total games. The series has been competitive, no matter how good or bad the teams were in any given season.
When they the three-game series against the Sox at Wrigley Field in May, the Cubs took over the all-time series lead going into this weekend, 75 wins to 74. In fact, the Cubs have won eight straight from the Sox and have taken 11 of the last 13.