If players can only be eliminated by loosing a match then the answer is 38. There must be 38 players eliminated for there to be a winner.
Sharapova of course
Roger Federer and Venus Willaim were crowned the winner of Wimbledon 2007
Prize money £640,000 (€750,000)
m.atpworldtour.com/Tennis/Tournaments/London-Queens-Club.aspx 78935 euro for singles winner in 2012
Japan was the winner of the bronze medal in the Men's Singles Tennis Tournament event at the Rio 2016 Olympics.