TOP SPORTS PHOTOS OF THE LAST 24 HOURS

Ana Ivanovic of Serbia celebrates defeating Caroline Wozniacki of Denmark during their match at the Indian Wells WTA tennis tournament in Indian Wells, California.

-Indian Wells: Ivanovic shock for Wozniacki; Azarenka, Sharapova advance

Wozniacki was ousted by former winner Ivanovic, who produced sizzling tennis from the baseline to triumph 6-3, 6-2 in the fourth round.

Hector Reynoso (left) and Patricio Araujo (centre) of Mexico's Guadalajara Chivas challenge Mathias Brito of Uruguay's Defensor Sporting during their Copa Libertadores soccer match at the Omnilife stadium in Guadalajara.

US President Barack Obama and British Prime Minister David Cameron talk at a first round "First Four" game of the NCAA Division I Men's Basketball Tournament between Mississippi Valley State and Western Kentucky at the University of Dayton Arena in Ohio.

Jason Maguire on Cinders and Ashes (right) jumps the last fence ahead of Robert Thornton on Montbazon to go on and win the Supreme Novices Hurdle Race, the first race of the day during the Cheltenham Festival horse racing meet in Gloucestershire, western England.

Nissan's new Deltawing racing car is seen after it was unveiled in London.

Nissan DeltaWing experimental racecar to be powered by Nissan 1.6-litre DIG-T engine will be a non-competitive participant in this year's Le Mans 24 hour race.

Boston Celtics Ray Allen (second left) lands on a fan's lap during their NBA basketball game against the Los Angeles Clippers in Los Angeles, California.