>> logan: he turned an annual charity boxing match into a political opportunity, challenging patrick brazeau, a senator from the opposition who had a black belt in karate. canadians took one look at the two of them, and said trudeau had lost his mind. the first round went as expected. but he and his trainer ali nestor, had prepared for this battle. outlast him. >> sophie trudeau: i think i was laughs ) looking through the fingers. it was not easy. >> logan: trudeau's wife sophie was in the crowd. >> sophie trudeau: you're thinking, why is he doing this again? and i don't like seeing this. but had told me so many times, "i got this. it's not gonna be easy. i got it. i can do it." >> logan: did you know the strategy going in? >> sophie trudeau: i did know that, but he-- he admitted that the punches were with such strength and force, he had been punched before but not with that strength. and-- there were some moments where-- you know, he was seeing stars. but he-- he stayed upright. >> logan: trudeau held firm to the plan and when brazeau tired, pounded him into submission. the referee had to s