Former UFC heavyweight champion Andrei Arlovski has begun training with renowned coach Greg Jackson at his academy in New Mexico as Arlovski looks to end a streak of back-to-back high-profile losses.

Ken Hahn is not a well-known MMA trainer to casual fans the way Greg Jackson is, but those who know the sport well know that he has an excellent reputation as a striking coach. Hahn has been working with Frank Mir for years, so it's interesting to hear his comments about where Mir stands in the last few days leading up to his UFC 100 matchup with Brock Lesnar.
Looking at Georges St. Pierre's list of opponents throughout his career, you can make a substantive case that GSP has faced the toughest list of foes top to bottom of any high-level fighter. Suffice it to say that given his resume, St. Pierre has faced some studs, but a closer look reveals a lengthy series of opponents who were primarily ground fighters.
His UFC 100 welterweight championship fight with Thiago Alves will be different, in that it will present him his first opportunity to fight a striker since a November 2003 fight with Pete Spratt.
So how will it go? Let's take a look.
In some ways, the UFC 98 Rashad Evans vs. Lyoto Machida light-heavyweight title match is not getting its due. The first UFC championship fight ever to boast two unbeatens deserves more attention than its currently getting.
Four years ago, Rashad Evans was just another guy trying to make a name for himself on The Ultimate Fighter. Now he's the champion of the UFC's most talented division, and he's getting ready to defend his title against the undefeated Lyoto Machida at UFC 98. 
If a UFC fighter was unbeaten and had knocked out nine of 11 opponents, including five in a row, there'd be a fan frenzy around him. But change the knockouts in that formula to submissions, and it's a whole different world.
Demian Maia has an undefeated MMA record, a ridiculous string of submission victories, and one of the most impressive Brazilian jiu-jitsu pedigrees in the sport.
A title shot? He's still waiting for that.
For most MMA fighters, a nickname is just something designed to make them sound tough as their names are called during pre-fight introductions. For Donald "Cowboy" Cerrone, the No. 1 lightweight contender in World Extreme Cagefighting, his nickname is a way of life. Cerrone was a cowboy before he was a fighter, and during his youth in Colorado he took up the sport of bull riding.Get the latest coverage on your favorite teams thanks to CBS Radio. Listen Now