Swiss stars Roger Federer and Stan Wawrinka appear to be locked into a perpetual cycle of speculation following Roger’s withdrawal from the final of the year-end Championships in London with a back injury.

While few deny the legitimacy of Federer’s injury, some believe that there is more to the story than is being told by the athletes.

Following his semi-final encounter with fellow countryman Stan Wawrinka, it was reported that there was conflict of sorts between the teammates in the locker room, which sparked concern over their ability to play next weekend’s Davis Cup final.

The story circulating is that Federer’s wife, Mirka, was heckling Wawrinka in the third set of their semi-final on Saturday. It appears that Mirka’s “intense and even provocative support for her husband caused Wawrinka to complain about her behavior during the match.” French media appear to have captured Wawrinka saying “she did this at Wimbledon too.”

Even seven-time Grand Slam champion John McEnroe appeared on ESPN2 and suggested that there was certainly a rift of some sort between the two players that impacted the Sunday final.

“Something went on in the locker room,” McEnroe said on TV of the top two Swiss. “There was a long talk between the players that extended well into the night.”