The Michael Bisping era in the UFC middleweight division hasn't exactly been a model of consistency.
By the time Yoel Romero and Robert Whittaker fight for an interim championship at UFC 213 Saturday in Las Vegas, it will have been nine months since the 185-pound title saw the light of day. Even longer since anybody who might rightly be considered a top middleweight contender got a sniff at the gold.
To find the last time a 185-pound title fight featured arguably the Octagon's top two middleweights, you have to go all the way back to October 2015, when Luke Rockhold beat Chris Weidman at UFC 162.