LOS ANGELES (AP) — Timothy Bradley remembers the first and final rounds of his last bout. The rest has vanished into a foggy haze.The welterweight champion candidly acknowledges his brain took a beating in his victory over Ruslan Provodnikov last March. Determined to prove his ring bravery to a doubting public, Bradley (30-0, 12 KOs) consciously abandoned years of technical discipline and waded into a fistfight with the Siberian brawler.“I wanted to prove to people that I was the true champion,” Bradley said this week.