Former world No.3 Paul Casey will join a host of stars in the inaugural Perth International at Lake Karrinyup Country Club next month.
Casey will join 2011 US Masters winner Charles Schwartzel and American world No.6 Jason Dufner at Australia's richest golf tournament.
Local products Brett Rumford, Rick Kulacz and Matt Jager have also been added to the expanded field of 156 players competing for a $2 million purse.
Englishman Casey, a three-times Ryder Cup representative, has won 14 international tournaments and was ranked third in the world in 2009 before being hit by injury.
The European Tour's leading players are scrambling to finish in the top 60 on the money list to earn entry into the $8 million Dubai World Tour Championships, which could force many to make the trip to Australia in a final bid to boost their earnings.
So far this year, four tournaments have been cancelled because of a lack of sponsorship, including three in Spain.
The Perth International is the only Australian event to be co- sanctioned by the European Tour and PGA Tour of Australasia.
Tourism minister Kim Hames said he expected more announcements to be made soon.
"A strong field for the tournament is taking shape," Hames said.
"There's been tremendous interest from European Tour players and as a result the field has been increased from 144 to 156."
International television coverage of the Perth International will reach up to 400 million homes after event owner IMG secured a new domestic broadcast deal.