They didn’t “overuse” their best pitchers at all. That’s just not true. They gave the innings the injured guys couldn’t replace to other pitchers and it worked out great:
ALDS: The Indians swept Boston, and did not stretch any other their starters (Kluber, Bauer, and Tomlin.) Kluber threw 104 pitchers; Bauer and Tomlin did not make full starts at all.
ALCS: After three full days off Cleveland beat Toronto in 5. No pitcher was stretched:
Game 1: Kluber 100 pitches
Game 2: Tomlin 85 pitches
Day off
Game 3: Bauer 21 pitches, injured and removed; no reliever threw more than 28 pitches
Game 4: Kluber 89 pitches
Game 5: Merritt 49 pitches; no relief pitcher threw more than 21
They then hadfive full days off before the World Series, so by the beginning of Game 1, we have a pitching staff that has not been at all stretched in the previous two rounds and that is fully rested.
Game 1: Kluber 88 pitches, Miller 46 in relief
Game 2: Bauer 87 pitches
Game 3: Tomlin 58 pitches
Game 4: Kluber 81 pitches
Now it’s at this point Cleveland is up 3-1, and of course Chicago won the last three to win it all. Was it because pitchers were tired? Well, none of them should have been…
GAME 5: CHICAGO 3, CLEVELAND 2. Obviously not a game lost due to bad pitching. Bauer got hit in the fourth, when he hadn’t thrown many pitches and he had not been stretched in Game 2. He just had one bad inning.
GAME 6: CHICAGO 9, CLEVELAND 3. Tomlin is knocked out in the third, and the game is basically over. Tomlin was hardly exhausted; as you can see above not a lot had been asked of him. He just got his ass kicked. Josh Tomlin’s a pure control guy and the Cubs were a very strong hitting team. It happens. It wasn’t that Tomlin was pushed too hard, it’s that he’s just not a front line starting pitcher.
GAME 7: CHICAGO 8, CLEVELAND 7. The blame here lies across a number of pitchers. Corey Kluber did not pitch well, and was pitching on short rest, so maybe you can argue he was stretched, but starting him 3 times did help the Indians win two games and his previous two starts were relatively short. Andrew Miller was hit hard, but he hadn’t pitched at all in three days. Bryan Shaw lost the game but he had two full days of rest, and had not been previously overworked.
Chicago just hit well. Whaddya gonna do?