Mulhern, now 15-1, tapped out Martinez with a rear-naked choke at four minutes and 48 seconds of the first round for his third title defense and tenth career submission victory. The 26-year-old Mulhern of Santa Fe, N.M. made a name for himself last year with a TKO win over UFC veteran Rich Clementi on HDNet.
Let's look at other notable fights from this past weekend.
-- On the same King of the Cage: Texas card, Dan Severn (99-16-7) won his tenth straight with a submission over Aaron Garcia.
-- Bellator season four welterweight competitor Chris Lozano (7-1) bounced back from his first career loss by stopping Gerric Hayes at NAAFS' Caged Vengeance 9 in Canton, Ohio.
-- Charles Bennett ("Krazy Horse") dropped his fourth straight, losing to Jason Gybels at Saturday's Caged Combat 3 in Grand Ronde, Ore. The ground game has been Bennett's Achilles' heel and the loss was Bennett's 16th career submission loss.
-- Denis Kang (34-12-2) returned to South Korea and earned a unanimous decision over Eun Soo Lee at Road FC 2. Kang's next fight will be against Jesse Taylor on May 28 at Battlefield Fight League 8 in Canada.
-- At Ring of Fire 40, Brandon Thatch (4-1) defended his welterweight "Young Guns" title with a 19-second knockout over Chris Holland. Michelle Blalock retained her 125-pound "Young Guns" belt with a second-round TKO over Casey Noland. In lightweight action, Marcus Edwards submitted Nick Laney for the "Young Guns" belt.
-- At Bellator 41, featherweight champion Joe Warren won a controversial decision in a non-title bout.