Former world number one Andre Agassi has said that the pressure of a one-set shootout made the International Premier Tennis League a tough test.
The American made his IPTL debut on Tuesday, going down 6-3 to Mark Philippoussis in the Legends set as his Singapore Slammers team lost 21-29 to Manila Mavericks.
"I was shockingly uncomfortable today," Agassi said after the match.
"It was just the pressure of it… So many times I felt that way against Pete [Sampras] because if you just lose concentration for a second on your serve, the set could be over with.
"And so every point was vital, that`s part of the game. But with this format, it`s that way with everybody, every match. It`s a pretty difficult environment to play high-end tennis."
The inaugural IPTL has not been without its problems, including some struggles to understand the scoring system, but Agassi believes it can become a welcome edition to the tennis calendar.
"You can`t ever say that the pillars of the sport will morph into this, that`s a stretch. We`re a sport of great tradition," he said.
"And nor do I think it necessarily should, but this needs to be a supplement to it, in my opinion… I just think there`s too many wins not to find a place in the year for those that choose to do it."