Editor’s Note: The Sentinel sports staff is putting together a summer series looking at the legacies of the most influential African-American athletes in history. Today: Charlie Sifford.Legendary golfer Lee Trevino called Charlie Sifford the, "Jackie Robinson of golf."That’s an apt description.Sifford was the first African-American to play on the PGA Tour. Because of his groundbreaking achievements in the sport, Sifford was inducted into the World Gold Hall of Fame in 2004, was