Larry Merchant and Floyd Mayweather were kind of like this generation's Muhammad Ali and Howard Cosell. Merchant always asked the tough questions and Floyd always responded in a contentious manner. But this time Mayweather's patience with Merchant's interview style wore thin and he let him know it. Merchant ended his 35-year career just seven months later. We're pretty sure he channeled officer Murtaugh as he walked away: "I'm too old for this shit."