Which Starter should I sit this week? Pettitte or Rodríguez

[jebatzel]

Weekly changes in my league (12 team 5 x 5 scoring)

Can start 5 of these 6 pitchers.

Wandy Rodríguez (Hou - SP) @COL (5/14)
John Maine (NYM - SP) @SF (5/14)
Ryan Dempster (ChC - SP) vs SD (5/14)
Andy Pettitte (NYY - SP) @TOR (5/13)
Scott Richmond (Tor - SP) vs NYY (5/14)
Scott Baker (Min - SP) vs DET (5/14)

(5 pitching stats: W, SV, K, ERA, and WHIP)

I was thinking of benching either Pettitte (is 0-1 with a 6.62 ERA in his last three starts.) or Rodríguez (@Coors field)

Who should I bench?