Lost in all the buzz surrounding UFC 189's main event between Conor McGregor and Chad Mendes is an epic co-main event between Rory MacDonald and Robbie Lawler.
Usually the term co-main event is a bit of a misnomer. It's more like the appetizer to a greater event. That simply isn't the case with this one. Not only is there an undisputed championship on the line as opposed to an interim one, but it's a matchup with some history.
Lawler and MacDonald locked horns back in UFC 167. Heading into the bout, MacDonald was on a five-fight win streak and appeared ready to make the leap to champion sooner rather than later.