A fight that was expected to deliver fireworks instead turned out to be a rather lackluster affair, as Bellator middleweight champ Rafael Carvalho (13-1 MMA, 4-0 BMMA) retained his belt with a split-decision win over Melvin Manhoef (30-13 MMA, 2-2 BMMA). The contest served as the main event of Friday’s Bellator 155, which took place at CenturyLink Arena in Boise, Idaho.