Latest UFC 189 odds: Jose Aldo rib injury shifts betting lines in favor of Conor McGregor

BREAKING NEWS: Jose Aldo has officially been ruled out, Conor McGregor vs. Chad Mendes is the new UFC 189 main event -- CLICK HERE.

Ultimate Fighting Championship (UFC) Featherweight Champion Jose Aldo was the odds-on favorite to win the UFC 189 pay-per-view (PPV) main event against Conor McGregor, a 145-pound title fight that takes place on July 11, 2015, inside MGM Grand Garden Arena in Las Vegas, Nevada.

Then came that pesky rib injury.

Now, "Junior" has slipped to slight underdog against the "Notorious" Irishman and clocks in at +125 on some of the more popular sportsbooks. In fact, our fiscal friends over at SportsbookReview.com have lined them up to see where you, the discriminate bettor, can find the best value.

Some context from the incomparable Jason Lake:

For our purposes, this looks like a great time to put McGregor in our UFC picks, just in case this fight does go on as scheduled. Think back to the "other" Fight of the Century between Floyd Mayweather and Manny Pacquiao; we didn't know it at the time, but Pacquiao suffered a shoulder injury in training, and his camp chose to cover it up rather than pull out of an eight- or nine-figure payday. Mayweather ended up beating Pacquiao without much trouble.

The stakes are a little lower this time, and we have foreknowledge (assuming everything's legit) about Aldo's injury. Still, the situation is congruent enough: Aldo likely won't be 100 percent by July 11, but it looks like there might be just enough time for him to heal up and make himself presentable in the Octagon. Would Aldo really risk his Featherweight title like that? Maybe. If he doesn't, and pulls out, that's fine - all monies returned.

All monies returned ... and put on Chad Mendes?

The former featherweight No. 1 contender has been thrust back into the top spot (sorry, Frankie) in case Aldo is forced to withdraw from the upcoming event. With less than two weeks to go before fight night, sportsbooks have already given "Money" a favorable line.

Now I'm not sure whether to hope Aldo stays or goes ... looks like some tasty betting action either way.