That’s right. Grunt low. Researchers at the University of Sussex have determined that the grunts produced by players during tennis matches they lost were higher in voice pitch than during the matches they won. Seriously. A University of Sussex news release reports that the researchers analyzed television footage of 50 matches featuring some of the world’s top 30 tennis players, measuring grunts made by the players during serves, backhand and forehand shots, and recording at what stage of each match the grunts were produced, as well as whether the players won or lost the match. The researchers say that while the pitch of grunts increased as matches progressed, the winner was usually predictable from the outset. He or she was the lower grunter.