For season ten, the UFC is looking for middleweights (185 pounds), light-heavyweights (205) and heavyweights.
As a requirement first implemented at "The Ultimate Fighter 9" tryouts, candidates must have a professional MMA record.
Registration begins 8 a.m. PT and the casting call starts at 10. Fighters must arrive before 9 at at The Marriott Seattle Airport Hotel, 3201 176th Street, in Seattle, Washington.
Applicants should dress appropriately to grapple and hit pads and must bring their own equipment.
"The Ultimate Fighter 9: US vs. UK," featuring lightweights and welterweights, will premiere April 1. Tryouts for last season were held last October in Chicago, Illinois and London, England.
Click here to download the application form. Applications must be received by Saturday, April 4.