Top five pitching duos

The Dodgers now boast the best pitching pair in the majors for 2013

Originally Published: February 17, 2013
By Paul Swydan | FanGraphs
Zack Greinke and Clayton KershawAP PhotoZack Greinke and Clayton Kershaw form a formidable pitching duo.

When the Los Angeles Dodgers signed Zack Greinke this offseason, he gave them -- along with lefty Clayton Kershaw -- one of the top front ends of a rotation in baseball. Together, the duo is arguably the best one-two punch in the game, a pair truly capable of winning four games in a seven-game series.

Are they the best in the game? I decided to pore through some advanced metrics (and sprinkle in a little subjectivity) to determine the top five duos in the game right now.