To me, pitching is the most important aspect in the game of baseball. If you have good pitching, then your team will do well (see the 2010 San Francisco Giants).
A common debate among baseball fans is which player, throughout the entirety of baseball, has pitched the best season ever. Spinning off this debate, let's take a different look at this; instead of debating who had the single best season ever, let's debate the single best season ever pitcher for every team.
The biggest problem I came across when creating this list was what type of handicap, if at all, I should give to more modern pitchers. It's tough to compare pitchers from the dead-ball and modern ball era; aside from the numbers being skewed because of the difference in the game but also because pitchers were used differently (i.e. they pitched more innings, etc).
With that said, I will warn you in advance that if I found two pitchers who I felt were close, but one was pitching in more the modern era and the other in the dead-ball era, I gave the advantage to the modern pitcher.
In this list, you will find that two different pitchers grace this list twice. Can you think of who they are? Also, you will find that two teams had the best season pitched in their franchises' history in 2010; any guesses on which organizations these are?
Alright, enough talk. Let's take a look at each team's individual best-pitched season...