Serena Williams leads tennis players nominations for 2013 ESPYS

Serena Williams got two nominations for the 21th annual ESPY Awards, which recognizes last years major sports achievements, best moments and leading players and performances. World Nº1 WTA player, who brought home in 2012 a Gold Medal from London Olympics and two Grand Slam titles (Wimbledon and US Open), is nominated for Best Female Athlete and Best Female Tennis Player. Maria Sharapova and Victoria Azarenka are the other nominees for Best Female Tennis Player.

Novak Djokovic is once again nominated for Best International Athlete alongside last year's winner football player Lionel Messi. Also competing for this prize are Cristiano Ronaldo, Usain Bolt and boxer Juan Manuel Marquez. Roger Federer, Andy Murray and Rafael Nadal compete with the Serbian in the Best Male Tennis Player category, which Nole won for the first time in 2012. Roger Federer is a six-time winner of the ESPYs - from 2005 to 2010 - and Rafael Nadal got his first award in 2011.

Britain's pride and joy Andy Murray books a place in a special category: Best Moment. The Brit won his first major title at the Olympics, which were played at Wimbledon, but will have tough competition from other unforgettable events such as Alex Morgan's goal in the Olympics women's football semifinal.

Fans will determine the winners in all ESPY categories (except the Arthur Ashe Courage Award and other special awards) by voting online at ESPN. Voting ends July 17 9 p.m. ET.

The 21th annual ESPY Awards will take place at the Nokia Theater in Los Angeles, USA, on July 17, 2013. Mad Men's Jon Hamm will be the host and will be joined by Ben Affleck and Le Bron James who are confirmed as presenters of the Jimmy V Perseverance Award and the Arthur Ashe Courage Award.