For Rafael Nadal and the other stars of tennis, there's a familiar ring to the questions being raised as the first ball is about to be struck at the Australian Open.
Recent match-fixing sanctions and a new case are bringing fresh scrutiny to the integrity of the sport a year after corruption allegations cast a pall over the first Grand Slam of the year.
"(It's) obviously negative, always in the first month of the season starts to happen," Nadal said at the season-opening Brisbane International. "You get tired about this kind of stuff, but the most important thing is fight against these kinds of things."
The headlines started appearing early in...