Ruiz defeat made me a smarter fighter, says Joshua

(Reuters) - Briton Anthony Joshua has said his first career defeat at the hands of Andy Ruiz Jr. was down to a lack of experience and he has become a "smarter" fighter ahead of December's rematch.Mexican-American Ruiz produced one of boxing's biggest upsets when he dethroned the previously undefeated world heavyweight champion with a seventh-round stoppage at New York's Madison Square Garden in June."It wasn't burnout. The issues I faced in the last camp, it's just down to lack of experience,"..