Lucas Browne became Australia's first world heavyweight boxing champion early Sunday, beating WBA regular champion Ruslan Chagaev in a surprise technical knockout. The unbeaten Browne was knocked down in the sixth round but fought back to send Chagaev to the canvas with a big right in the 10th. While the Uzbekistani champion was able to continue, he was backed into the ropes by Browne, who hit him with a barrage of unanswered right hooks until the referee stopped the fight. Chagaev claimed he was able to continue but added he accepted the referee's decision. Browne's record improved to 24-0 (21 KO), while Chagaev dropped to 34-3-1 (21 KO). Browne wins the so-called regular version of the WBA belt, while Britain's Tyson Fury is considered the WBA's "unified" champion, since he also holds the WBO version. After a quiet opening to the fight, Chagaev took control in the third and landed solid hits to Browne's head in the subsequent rounds. The fight appeared all but over when a left hook sent Brown sprawling in the sixth. After beating the count, the Australian was saved by the bell as more shots from Chagaev sent him staggering around the ring. Browne came out swinging at the start of the seventh, landing a string of uppercuts and rattling Chagaev, who seemed to abandon thoughts of winning by knockout in favor of consolidating his advantage on the scorecards. Following two quiet rounds with Chagaev dictating the pace, the fight looked set to go to the judges, but Browne had another surprise in store. A big right hook through Chagaev's guard knocked the champion down and, when the fight resumed, Chagaev was a shadow of his former self and took punishment against the ropes until the referee halted proceedings. The heavily tattooed Browne, a former mixed martial arts fighter and bouncer, was jubilant in victory but received little cheer from the crowd, which was strongly behind Chagaev. The bout took place early Sunday morning in the Russian region of Chechnya, whose strongman leader Ramzan Kadyrov — a fan of Chagaev's — had a personal role in staging the fight. Kadyrov was prominent throughout the evening, cheering on local fighters from a sofa together with the leather-clad leader of a pro-Kremlin motorcycle club.