Mitsuhiro Ishida spent a significant amount of time in his career as a very tough out in the lightweight division. He's one of only two men to score a victory over current Strikeforce lightweight champion Gilbert Melendez and has fought in Strikeforce, DREAM, PRIDE, Shooto and DEEP.
His career seems to be winding down now as, after being knocked out by Doo Ho Choi at DEEP 56 this weekend, he has dropped four of his previous six bouts with three of those losses being by a form of knockout. He dropped to featherweight at DREAM 15 and won 2 fights but now has lost two in a row including a split decision against Joachim Hansen.
Here's the video of the fightLINK