Don't even need a sweep to do that. It's also unlikely, but Cubs, Tigers, Rockies, and Dodgers winning today means that the Cubs need to only win one of the final 2 to simultaneously win the division and eliminate St. Louis. If both games today go our way, then we will have 6 chances to get into the NLDS. Saturday (Cubs game + Brewers game), Sunday (Cubs game + Brewers game), Monday division tie breaker, Tuesday wild card game.