Photo by aturkus on flickr |
The last pitcher to finish the season with more than 30% of his team's wins was Fergie Jenkins, winning 25 games for the 1974 Texas Rangers. And Jenkins pitched in a 4-man rotation, allowing him to get 41 starts.
In other words, no pitcher has ever done what Cliff Lee is doing: winning 30% of his team's games while pitching in a 5-man rotation.