BJ Penn Streak: 3 wins Record: 13-4-1 Previous Ranking: N/A Big Wins: Serra, Gomi, Hughes, Sherk, Serra, Stevenson Baby Jay is so good that there's no one left for him to fight at 155. After making Sean Sherk look terrible, he has planned a move to 170, which is the only place he'll truly be challenged. He's beaten everyone the UFC has to offer and a fight against Huerta or Florian would just force the GSP fight to happen later in his career. Bad move.

Takanori Gomi Streak: 1 win Record: 28-3 Previous Ranking: N/A Big Wins: Kawajiri, Sakurai, Ishida Unfortunately, most Americans only know Gomi as the guy on which Nick Diaz pulled the gogoplata. Other than that, Gomi has been unstoppable, holding wins over Ishida and Kawajiri (both on this list). Gomi's only other noticeable blemish? A submission loss to BJ Penn.

Eddie Alvarez Streak: 5 wins Record: 15-1 Previous Ranking: N/A Big Wins: Kawajiri, Hansen This Philadelphia Fight Factory stand out was relatively unheard of until he soundly defeated Joachim Hansen and Tatsuya Kawajiri in the DREAM lightweight tournament. An injury was the only thing that stopped him from from finishing his run by keeping him out of the finals. The eventual winner, ironically, was the man who Alvarez had beaten in the second round.

Joachim Hansen Streak: 2 wins Record: 19-7-1 Previous Ranking: N/A Big Wins: Aoki, Uno, Calvancante, Gomi Recent losses, poor competition, and an early exit in the DREAM tournament had all but pushed Hansen off the lightweight rankings radar. Then, in a magical MMA moment, a win against Kultar Gill granted Hansen the opportunity to avenge a loss to Shinya Aoki in the finals. But not just any loss: it was the first gogoplata ever successfully performed in MMA competition. The rest is history: Hansen avenged the loss, took the title belt, and propelled himself back into the middle of the pack.

Shinya Aoki Streak: 1 loss Record: 17-3 Previous Ranking: N/A Big Wins: Uno, Hansen, Calvancante, French Aoki made a splash when he defeated top contender JZ Calvancante, but he's been solid long before that. Winning for nearly three years straight, Aoki holds quality wins over Joachim Hansen and Clay French. A recent loss to Hansen, however, caused Aoki's slip to #5.

Tatsuya Kawajiri Streak: 1 loss Record: 22-5-2 Previous Ranking: N/A Big Wins: Hansen, Ribeiro Here's another little- known Japanese fighter. Despite losses to Melendez and Gomi, Kawajiri had been white hot lately, winning three straight until he hit the freight train known as Eddie Alvarez in the DREAM tournament semifinals.

Mitsuhiro Ishida Streak: 1 loss Record: 16-4-1 Previous Ranking: N/A Big Wins: Aurelio, Melendez Ishida seemed to be primed for a climb up the rankings with his huge win over Gilbert Melendez. Unfortunately for him, a loss against Caol Uno in his last fight keeps him down near the bottom.

Josh Thomson Streak: 7 wins Record: 18-2 Previous Ranking: N/A Big Wins: Melendez The Punk was a much undervalued fighter until he defeated training partner Gilbert Melendez midway through 2008. The AKA standout has now won 7 straight.

Gilbert Melendez Streak: 1 loss Record: 14-2 Previous Ranking: N/A Big Wins: Kawajiri, Guida Before surprising losses to Ishida and Thomson, the young Melendez was expected to be the new thing at 155. Similar to Mauricio Rua, he'll get more than enough chances and will be atop this list soon.

JZ Calvancante Streak: 1 loss Record: 18-2-1 Previous Ranking: N/A Big Wins: Uno, Ribeiro JZ appeared on many P4P lists until Aoki dethroned him early this year. Other than that hiccup (albeit against one of the world's premier fighters), JZ has been unbeatable, taking down top names such as Vitor Ribeiro and Caol Uno. The best part? He's just 24 years old.