Open tryouts for the recently announced “The Ultimate Fighter Nations: Canada vs. Australia” reality show are now set, officials today announced. They take place Sept. 11 in Sydney (location TBA) and Sept. 22 in Toronto (Westin Harbour Castle). Both sessions kick off at 8 a.m. local time. As MMAjunkie.com (www.mmajunkie.com) previously reported, officials have put a call for both welterweight and middleweight UFC hopefuls.