The Citi Open in Washington, D.C. has a rich history, dating all the way back to its founding in 1969, which makes perfect sense given where it's located. This week, Keely O'Brien has added to that history by becoming one of just five female ATP tournament directors on the tour.

She, just like the tournament, has come a long way. 

"I started in 2004 as an intern, I was running up and down those stairs getting bagels and flipping through the PA scripts," O'Brien said. "It was then that I knew I wanted to be here and I wanted to work with this team. Something is very magical about this place."

The ATP 500 tournament will see Top 10 talent like Dominic Thiem, Kei Nishikori, Milos Raonic and Grigor Dimitrov. The Citi Open is also host to the women's tour, with stars like Simona Halep and Kristina Mladenovic featured in the WTA International event. 

"I’ve had unbelievable mentors, both men and women, throughout the process," O'Brien said. "And I think just trying to to carry on a legacy is, for me, what I focus on."