Former Ultimate Fighting Championship (UFC) Light Heavyweight Champion Quinton Jackson stepped inside the Octagon tonight (Jan. 26, 2013) for what appears to be the final time, colliding with Glover Teixeira in the UFC on Fox 6 co-main event, which took place from the United Center in Chicago, Illinois. "Rampage" -- who has made it no secret that he is unhappy with the world's leading mixed martial arts (MMA) promotion and was eager to test the free agent combat sports waters -- dared the Brazilian bruiser to stand and trade with him. It was clear that Jackson wanted to add another knockout to his extensive highlight reel, slinging looping hooks with evil intentions. Teixeira stood his ground, fired back and, for the majority of the three-round bout, got the better of the exchanges. Teixeira mixed it up with sporadic takedowns, as well as threatening with submissions on the ground, keeping the legend honest and battling to the very end. Jackson -- who wants to try his heavy hands at boxing in the future -- landed a few good shots, but the homerun hit never came. In fact, it was Teixeira who dropped Jackson at one point in the bout and had him seeing stars. To his credit, Jackson sucked it up competed to the bitter end, but it wasn't enough as Teixeira earned a very hard-fought unanimous decision. Where Jackson ends up is anyone's guess, losing three consecutive bouts is not a ringing endorsement of his future success with a different organization ... unless he becomes the most talented 205-pound can crusher in MMA. For a more detailed breakdown of the showdown between Quinton Jackson vs. Glover Teixeira click here and for complete UFC on FOX 6 results and blow-by-blow coverage of all the night's action click here.