Sunderland's John Mensah (R) challenges Liverpool's Jay Spearing to concede a penalty during their English Premier League soccer match in Sunderland, northern England March 20, 2011. REUTERS/Nigel Roddis (BRITAIN - Tags: SPORT SOCCER) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS