Last Updated: 16/03/14 1:46pm
Billy Payne: The Chairman of Augusta National Golf Club
Any past champion is eligible to play in The Masters but that is just one of 18 ways of getting a spot in the field.
Here we look at some of the less heralded players taking part this year and list what category booked them a prized place at Augusta National.
Sang-Moon Bae: Winners of PGA Tour events that award a full-point allocation for the season-ending Tour Championship, from previous Masters to current Masters. Bae won the HP Byron Nelson Championship in May 2013.
Roberto Castro: Those qualifying for the previous year's season-ending Tour Championship. Castro was one of the elite 30 who reached the FedEx Cup finale at East Lake. He went into the week ranked 24th and finished 21st.
KJ Choi: Winners of The Players Championship (Three years). Choi's victory at Sawgrass in 2011 means this will be his final year using that exemption.
Stewart Cink: British Open Champions (Honorary, non-competing after 5 years). Cink's dramatic play-off victory over Tom Watson at Turnberry in 2009 gets him in.
Tim Clark: The first 12 players, including ties, in the previous year's Masters Tournament. Clark birdied three of the final five holes in 2013 to finish tied 11th.
Brendon de Jonge: Those qualifying for the previous year's season-ending Tour Championship. The Zimbabwean was 27th of the 30 qualifiers for East Lake.
Victor Dubuisson: The 50 leaders on the Final Official World Golf Ranking for the previous calendar year. The Frenchman jumped from 106th to 39th with his win in November's Turkish Airlines Open and ended the year in 32nd.
Ken Duke: Winners of PGA Tour events that award a full-point allocation for the season-ending Tour Championship, from previous Masters to current Masters. Duke landed the 2013 Travelers Championship in June - his first PGA Tour success.
Derek Ernst: Winners of PGA Tour events that award a full-point allocation for the season-ending Tour Championship, from previous Masters to current Masters. Ernst was the shock winner of the Wells Fargo Championship at Quail Hollow in May. Since then he's missed 15 cuts and hasn't had a top 30.
Matt Fitzpatrick: The US Amateur champion
Matthew Fitzpatrick: Current US Amateur Champion. Fitzpatrick became the first Englishman to win the event in more than a century when he beat Australia's Oliver Goss 4&3 in the final last year.
Oliver Goss: The runner-up to the current US Amateur Champion.
John Huh: The first 12 players, including ties, in the previous year's Masters Tournament. The 23-year-old American shot a closing 68 on his Masters debut last year to finish tied 11th.
Chang-woo Lee: Current Asia-Pacific Amateur Champion. The South Korean amateur, 19, scored a three-shot victory at the Nanshan International Golf Club in China last October.
Michael McCoy: Current US Mid-Amateur Champion. McCoy, aged 50, became the second oldest champion in the history of the event when taking the title last October.
Jordan Niebrugge: Current US Amateur Public Links Champion. The 19-year-old edged Michael Kim 1-up in the final at Laurel Hill Golf Club. The Public Links is designed for amateur players with no ties to private clubs or courses requiring membership.
Thorbjorn Olesen: The first 12 players, including ties, in the previous year's Masters Tournament. The young Dane recovered brilliantly from an opening 78 to finish tied sixth on his debut 12 months ago.
D.A. Points: Those qualifying for the previous year's season-ending Tour Championship. Points qualified for the 30-man shootout at East Lake in 28th spot.
Garrick Porteous: Current British Amateur Champion. The 23-year-old defeated Finland’s Toni Hakula 6&5 in the 36-hole final at Royal Cinque Ports in Kent last June. That win also got him into the 2013 Open at Muirfield where he missed the cut (76-77).
Others who qualified by being in the world's top 50 at the the end of 2013 include Thomas Bjorn, Jamie Donaldson, Gonzalo Fernandez-Castano, Branden Grace, Peter Hanson, Thongchai Jaidee, Miguel Angel Jimenez, Joost Luiten, David Lynn, Matteo Manassero and Hideki Matsuyama,