Ranking the 10 best Chicago Cubs teams by winning percentage

2. 1907 - 107-45-3 (.704)

1907 featured yet another great pitching team. Two starting pitchers put up an ERA+ over 200. Surprise! Mordecai Brown, with his ERA+ of 178 was not one of them, even though he still won 20 games. Jack Pfister (214) and Carl Lundgren (211) put up the two highest ERA+ in the league. The Cubs faced the Tigers in the World Series for the first of four times. After Game 1 of the World Series was called due to darkness, the Cubs won the next four games to win their first championship.

1. 1906 - 116-36-3 (.763)

Even though the 2001 Seattle Mariners matched the 1906 Cubs with 116 wins, it came in a 162-game season, so the Cubs still hold the record for best single-season win percentage. Frank Chance led the team with a .319 batting average and a 158 OPS+. On the pitching side, it was Mordecai Brown once again, who put up a career-low 1.04 ERA to go along with his 26-6 record. In the World Series, the Cubs were matched up with the “hitless wonder” Chicago White Sox. The White Sox stunned the Cubs in six games, beating Mordecai Brown twice in one of the biggest World Series upsets in history.