Matt Leinart, Johnnie Morton among NFL stars who've tried MMA

"Pretty Boy" to "Killer"
Matt Leinart faces the wrath of Jay Glazer.
Johnnie Goes Down
Johnnie Morton gets KO'd ... in 38 seconds.
Beastly Bob
Bob Sapp pummels Alex Karaev at K-1 Hero's 2.
Fullback to Fighter
Brendan Schaub goes to town at Ring of Fire.
Keepin' up with the Joneses
Meet Marcus Jones -- former Falcon, now T.U.F.'er.
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