Mexico will return to the Formula One world championship in 2015 after being absent from the calendar since 1992, the sport's ringmaster Bernie Ecclestone confirmed on Wednesday.

"I'm happy to announce we've concluded an agreement to have a race in 2015," Ecclestone told www.formula1.com.

Spanish giants Barcelona said Wednesday they have bought 30-year-old French defender Jeremy Mathieu from Valencia for €20 million ($27 million).

Barcelona have been seeking to bolster their defense since Carlos Puyol ended his career.

Manchester United are prepared to break transfer records in order to give new manager Louis van Gaal the players he wants, according to executive vice-chairman Ed Woodward.

The English giants have already spent over £50 million ($85 million, 63 million euros) on England left-back Luke Shaw and Spanish midfielder Ander Herrera, and Woodward says that they are ready to spend even more.

Liverpool manager Brendan Rodgers says the team is moving on after Luis Suarez' departure to Barcelona for a $130 million transfer fee.

"He gave everything for Liverpool," Rodgers said Tuesday when asked if Suarez had let the club down. "Of course there have been issues, but they're in the past. He was a brilliant player for us and for me. ... It's a shame he's not here. But Liverpool, as a club, is bigger than any one player."

A racehorse owned by Britain's Queen Elizabeth II that won the prestigious Gold Cup at Royal Ascot last year has tested positive for the banned painkiller, morphine.

The British Horseracing Authority announced last week that tests on five horses under the care of various trainers showed the presence of morphine in their 'A' samples.

Embattled Los Angeles Clippers owner Donald Sterling filed a new lawsuit Tuesday as testimony continued in a probate trial on the validity of a $2 billion deal to sell the NBA team.

A mess that began in April when recordings of Sterling making racist comments to his would-be girlfriend led to his being banned from the NBA for life by league commissioner Adam Silver, lingers on -- even as an August 15 deadline approaches to complete the deal, or risk having the offer withdrawn.

Real Madrid on Tuesday signed Colombian striker James Rodriguez, the top scorer at the World Cup, from Monaco on a six season contract.

Neither team gave the transfer fee, but Spanish media reported a figure of between €75 million and €80 million ($101m-$108m), making him one of the most expensive players in history.

Vincenzo Nibali is in the yellow jersey as the Tour de France peloton set off on the longest stage, into the Pyrenees.

The Italian holds a lead of more than four-and-a-half minutes over second-place Alejandro Valverde of Spain.

Former Barcelona president Sandro Rosell was questioned in a Spanish court on Monday over the 86-million-euro ($117 million) signing of Brazilian striker Neymar.

Rosell did not speak to journalists as he arrived at the Madrid headquarters of the National Court, Spain's top criminal court, to be questioned by investigating judge Pablo Ruz.

Portugal superstar Cristiano Ronaldo, putting a miserable World Cup behind him, on Tuesday declared himself fit and ready to go as he chases trophies at Real Madrid.

"I'll try my best all the season like I do it every year. I'll try to be the best, try to help my team, try to score goals and try to win titles," the 29-year-old striker told a sponsor's event in Tokyo, adding he would like to play "six, seven more years" at the top level of club competition.