If there is a face to know in the light heavyweight division, this is it.
25-year-old champion Jon Jones is on top of the 205-pound mountain, and for good reason.
Jones joined the UFC in August 2008, and since that time has fought a staggering 11 times, winning 10.
His lone loss came to Matt Hamill, but not without controversy. Jones was disqualified from the bout after delivering illegal elbows to Hamill, but he was well on his way to victory before the stoppage.
Still, a loss is a loss, and our light heavyweight king remains blemished thanks to that lapse of concentration.
On the positive side, Jones recently penned an endorsement deal with Nike, and he is the youngest UFC champion in promotion history, so yeah, there's that.
After taking the belt from Shogun Rua at UFC 128 in March 2011, Jones has defended his title three times, with a fourth defense looming against Dan Henderson at UFC 151 on Sept. 1.
He is one of the most active and dominant fighters in the UFC, and his perch lies atop the light heavyweight division.
If there is one thing to know about the division, know Jon Jones.