This was a tough one. It seemed like a no-brainer at first. Aldo is a dominant force at featherweight after all, right? However you've got Chad Mendes, Cub Swanson, and Frankie Edgar all looking so good, and Aldo plagued with injury off and on over the last few years, that it becomes a bit more difficult. Plus when he is fighting, he's so well rounded that sometimes you forget his power. I looked at Iuri Alcantara as well, who once had five straight TKO finishes. Aldo has just one more knockout over his career, but here's the thing: Aldo's strikes come from all over. He doesn't just hit hard (but he can) - he kicks hard. His leg kicks are legendary, and brutal. And his knees. He's got some of the best knee strikes in the game. Ask Chad Mendes what an Aldo knee feels like - Mendes was KO'd by an Aldo knee in highlight reel fashion. While he's relied more on decisions of late, Aldo's still a very heavy hitter at 145.