Japanese teenage sensation Ryo Ishikawa has decided to take up a special temporary membership to the PGA Tour for the rest of this year.

This means that Ishikawa will be able to accept as many sponsor's exemptions as he is offered for the remainder of the season.

The 19-year-old has already competed in 10 events on the PGA Tour this year and has earned $577 136, which is more than the player who finished 150th on the 2010 moneylist earned and made him eligible for the special membership.

Ishikawa's best showing was in the WGC-Bridgestone Invitational where he tied for fourth after threatening to become the PGA Tour's youngest winner in 100 years.

He was asked after that tournament whether he was considering taking up a special membership, but wasn't sure if he had qualified yet.

"I don't know any of the details at this point," Ishikawa said.

"I know that there's a big event coming up for me and hopefully I'd like to play well there in order to be a part of the PGA Tour. I'd like to play 100 percent on the Tour."

The 19-year-old's impressive play has started to make some of the best players in the game sit up and take notice

"It's hard to fathom. He's been around a little bit and he's only 19," said former world No 1 Tiger Woods of Ishikawa.

"Give this kid another decade, he is going to be unreal. He makes a ton of putts, he usually drives it on a string, and he's learning how to flight his golf ball down better. He's going to do great things."

World No 7 Adam Scott played in the 2009 Presidents Cup on the International team with Ishikawa and was impressed by the teenager's maturity and behaviour.

"He's got a very mature game but as he grows and gets stronger and smarter about how to play the game, he could be a world beater," the Australian said.

Despite being one of Japan's biggest sporting icons Ishikawa has picked up the nickname 'Bashful prince' because of his humility.