This May marks the 20th anniversary of Annika Sorenstam playing the Bank of America Colonial at Colonial Country Club, where she became the first woman in more than 50 years to play with the men on the PGA Tour. That week was highly anticipated, stressful, and loaded with controversy as more than 300 reporters, hundreds of photographers, and thousands of fans flocked to Texas to see her play. The reactions to her inclusion ranged from supportive to hostile, and though she handled herself admirably both on and off the course, it's no surprise that she never did it again. In a way, Sorenstam was playing for the entire LPGA Tour and women's golf in general that week. She wasn't the first. Two women before her, and three after, also took their turn playing with the men, and the story of those women is one of courage, triumph, failure, and a no small amount of sexism. This is the story of the six women in history who teed it up with the men on the PGA Tour.