The opponent may be different, but the odds have pretty much stayed the same.

Ultimate Fighting Championship (UFC) featherweight contenders Conor McGregor and Chad Mendes will bang it out for the interim 145-pound title at UFC 189 a week from Sat. night (July 11, 2015) inside MGM Grand Garden Arena in Las Vegas, Nevada, now that Jose Aldo has been ruled unfit to compete.

Full report here.

Ever since "Junior" was struck down by a rib kick in training camp, the betting lines shifted in favor of his "Notorious" opponent. While "Money" poses a new set of problems for the hard-hitting Irishman -- namely his wrestling pedigree -- the bookies still have McGregor as the -150 favorite in the money line.

That leaves Mendes, who swooped in on short notice, as the slight underdog at +125.

I would expect those lines to change as we inch closer to fight night. For a more detailed look at all the betting lines for UFC 189, which also includes the odds for the Robbie Lawler vs. Rory MacDonald welterweight title fight, find the best value at Sportsbookreview.com right here.