Based off my math, If Marquis pitches 6 innings with 0 ER, he would still finish behind Lannan.
John Lannan - 3 starts, 8 ER, 17.33 IP, 4.15 ERA
Jason Marquis - 2 starts, 6 ER, 9 IP, 6 ERA
Last start for the bet. Go me.
6 ER in 9 IP. If he pitched 6 shutout innings, thats 6/15 = .4 * 9 = 3.60 ERA.