Roddick criticises Tour schedule
Former world number one Andy Roddick has called for a shorter season after the Paris Masters was hit by some high-profile withdrawals.
Roger Federer and Rafael Nadal, the top two in the world, are both injured and have joined Marat Safin, Andre Agassi and Carlos Moya on the sidelines.
"The various pull-outs prove that the players are tired at the end of a very long season," said Roddick.
"Everyone agrees that the season needs to be shorter."
Nadal, who won his fourth Masters title of the year in Madrid last week, is nursing a knee injury.
Federer has a torn ankle ligament that also puts his appearance at the end-of-season Masters Cup in doubt while Lleyton Hewitt is doubtful as he awaits the birth of his first child.
But Roddick, who looks set to be the only top-six player in the Paris field, believes the schedule is too demanding on the players.
"It's ridiculous to have to play for 10 and a half months of the year and there is no other sport where you have to do that," he said.