Butch Buchholz (U.S.):
A former player and ATP executive director (1980-83), Buchholz, 68, is chairman of the Sony Ericsson tournament in Key Biscayne, often referred to as the "Fifth Slam'' because of its scope and prestige.
Brad Drewett (Australia):
Currently CEO of the ATP's International Group and tournament director of the Tennis Masters Cup (the tour's year-end championships), the 50-year-old Drewett was an accomplished doubles and singles player in the 1970s.
Arlen Kantarian (U.S.):
Kantarian, 55, announced last week he was stepping down as the U.S. Tennis Association's CEO for professional tennis after nine years that saw spectacular revenue growth in its signature event, the U.S. Open.
John P. McEnroe Sr. (U.S.):
The 73-year-old patriarch of this tennis family, who sent a letter to top players and agents this summer declaring his candidacy, is a semiretired lawyer who has negotiated sports and television contracts for a number of players.
Paul McNamee (Australia):
A four-time Grand Slam doubles champion, McNamee, 53, was the CEO of the Australian Open and founder and tournament director of the Hopman Cup. He also has held executive positions in golf and Australian rules football organizations.
Larry Scott (U.S.):
WTA chairman and chief executive officer since 2003, Scott, a 44-year-old former Harvard University tennis captain, spent more than 10 years in executive and management positions at the ATP after a modest playing career.
Mark Young (U.S.):
The 50-year-old Young, who doubles as ATP general counsel and CEO/Americas, oversees the tour's operations in North and South America and is one of the longest-tenured executives in the organization, having come on board in 1990.