Get enough guys around one another and ultimately the discussion will turn to who is the toughest. If the fraternity members of Phi Sigma Kappa at the University of Tennessee start wondering who would win a boxing match, Warren County local Lake Kirby can simply show his brothers his championship belt.Kirby, a sophomore at the University of Tennessee, won the junior light heavyweight division in the 33rd annual Ace Miller Memorial boxing tournament Saturday night at the Knoxville Expo Center.Never afraid of a fight, Kirby beefed up this year to participate in the 168-pound division after finishing second in the middle weight division as a freshman. In last year’s finals, Kirby was pitted against the coach from his fraternity and the duo shook hands as the older fighter claimed the title.This year in a bracket of six boxers, Kirby proved to be the best.