The next six weeks are set for the most dynamic Masters Tournament qualifying spree in memory.

Among the non-qualified bubble players seeking a top-50 invitation at the conclusion of Bay Hill are two of the biggest major players for more than a decade – Retief Goosen and Ernie Els.

Goosen, who hasn’t missed the Masters since 1999 and finished second or third in Augusta four times, is currently clinging to the 50th spot. Els, a Masters regular and frequent heartbreak victim for 18 years since 1994, has to make up significant ground from No. 65 and will have to get through either Luke Donald or Lee Westwood in the first round of next week’s WGC Match Play to ignite a charge.

But the South African pair with five major wins between them aren’t the only intriguing hopefuls on the Masters watch list.

Resurgent Scotsman Paul Lawrie, the 1999 British Open winner, leaped into the top 50 with a victory in Qatar and ranks an insecure 45th. Japanese superstar Ryo Ishikawa is outside looking in at No. 53. Italian teenager Matteo Manassero is lurking at No. 61. Recent Euro Tour upset winners Robert Rock (who beat Tiger Woods in Abu Dhabi) and Rafael Cabrera-Bello (who rallied past Lee Westwood in Dubai last week) are ranked 58th and 60th.

A couple of guys who won back-to-back recently in their native countries – Greg Chalmers in Australia and Branden Grace in South Africa – are still in need of another big score to earn Augusta bids.

The highest ranked Americans not yet qualified are Ryan Moore (67th) and Spencer Levin (71st).

The Masters also has the option of offering special exemptions to international players, which could bode well for several players from Asia where Augusta’s emphasis has been in the last decade.

Here’s a list of players ranked among the top 75 in the world not yet qualified for the Masters.

Paul Lawrie (45)
Retief Goosen (50)
Ryo Ishikawa (53)
Robert Rock (58)
Rafael Cabrera-Bello (60)
Matteo Manassero (61)
Greg Chalmers (63)
Nicolas Colsaerts (64)
Ernie Els (65)
George Coetzee (66)
Ryan Moore (67)
Robert Allenby (68)
Joost Luiten (69)
Spencer Levin (71)
Alexander Noren (73)
Toru Taniguchi (74)