Spanish football clubs must commit to eradicating violent groups among their fans or face fines and penalties, league president Javier Tebas said on Thursday.

Tebas planned to draft a list of clubs that collaborate with radical "ultra" groups, and proposed sanctions including "points deductions or relegation."

The IOC is prepared to take action against any Russian Olympic athletes or officials involved in doping if allegations of systematic cheating and corruption in the country are proven to be true, IOC President Thomas Bach said Thursday.

Bach met with World Anti-Doping Agency President Craig Reedie to discuss the allegations of Russian doping made on Wednesday by German television channel ARD and French sports daily L'Equipe.

The English Football Association released proposals on Thursday designed to enhance England's prospects which have been inspired by models from Germany and Belgium.

The "England DNA" program will be rolled out to more than 1,500 coaches at the national team's St. George's Park base in central England.

Brazilian football club Santos has signed a lifetime contract to use the image of former player Pele.

The club said Thursday it will "continue using Pelé's image in its marketing, publicity and social media campaigns."

Golden State stretched its winning streak to 11 games by beating New Orleans 112-85 on Friday, matching the longest run of wins in franchise history.

The Warriors' 1971-72 team also won 11 straight.

Defending champion Juan Martin del Potro has been granted a wildcard into next month's Sydney International, organizers said Thursday.

The 2009 U.S. Open winner will start as the tournament favorite despite a tough injury-blighted year.

Borussia Dortmund coach Jurgen Klopp says Friday's clash with Hoffenheim is a "High Noon" showdown for the Bundesliga's bottom side to prove they can turn around their dire league form.

Dortmund are enduring the worst start to a league season in their history and last Sunday's 2-0 loss at Eintracht Frankfurt was their eighth defeat in 13 league games.

Bayern Munich defender Jerome Boateng has said it would be a "huge honor" to one day lead Germany out as the first black captain of the World Cup holders.

When Philipp Lahm retired after winning the World Cup in July, Bastian Schweinsteiger succeeded him as Germany skipper, but Boateng says he wants to lead out the world champions in the future.

Real Madrid's German midfielder Sami Khedira was released from hospital on Wednesday after spending the night under observation with concussion, his club confirmed.

"Following neurological exams performed on Sami Khedira today in the Sanitas La Moraleja hospital, the player has been discharged," read a statement on the club website.

Manchester United manager Louis van Gaal hopes to welcome Daley Blind back to full fitness before the end of the month, in what promises to be further good news for the Dutch manager following a 2-1 win over Stoke that kept his side fourth in the Premier League.

Van Gaal's compatriot Blind has been absent since injuring his knee playing for the Netherlands against Latvia in mid-November, although recent tests have been encouraging.