Yoshiyuki 'Zenko' Yoshida enters 2009 Abu Dhabi Combat Club (ADCC)

Fourth dan Judoka and current UFC welterweight Yoshiyuki Yoshida is throwing his hat into the world's most recognized submission grappling tournament as "Zenko" has officially entered the 2009 Abu Dhabi Combat Club (ADCC) for September 26-27 in Barcelona, Spain, according to Graciemag.com.

ADCC is an invitation only event held every two years to determine the world's best no-gi grapplers. Only 16 competitors in each of five weight classes plus the "absolutes," it is widely considered the most difficult submission fighting event to qualify for.

The 2007 Cage Force welterweight tournament champion made his Octagon debut by submitting "War Machine" (aka, Jon Koppenhaver) via anaconda choke at UFC 84 before headlining the UFC: "Fight for the Troops" event in support of the Intrepid Fallen Heroes Fund last December.

Unfortunately for Yoshida, things did not go his way. Josh Koscheck secured a brutal knockout victory that saw Yoshida finished for the first time in his career.

Zenko was able to bounce back from the loss with a first-round finish of his own at UFC 98, submitting Brandon Wolff via guillotine choke. He is now 10-1 in his past 11 fights with all 10 wins coming via stoppage (eight of which ended in the first round).

In addition to the ADCC, Yoshida will reportedly "Rumble" with Anthony Johnson at UFC 104 from the Staples Center in Los Angeles, Calif., on Oct. 24.

To view his ADCC profile click here.