Serena Williams

defeated

Lesia Tsurenko

, 6-3, 6-2, on Sunday to send the United States back into the Fed Cup World Group by clinching a series victory over Ukraine in Kharkiv.

Williams' win gave the U.S. an unassailable 3-0 lead. Christina McHale later won, 7-5, 6-3, against 17-year-old Ukrainian Elina Svitolina to secure a sweep of the singles matches. Americans Liezel Huber and Sloane Stephens finished a 5-0 rout with a 6-4, 6-1 doubles win over 19-year-old twins Lyudmyla and Nadiya Kichenok.

Rafael Nadal beat Novak Djokovic 6-3, 6-1, to win the Monte Carlo Masters for the eighth straight year.

COLLEGES: Major college football's 11 conference commissioners and television executives will be in Hollywood, Fla., from Tuesday to Thursday for the annual BCS meetings.

An April 4 memo obtained by both USA Today and the Associated Press lists four playoff formats that could be instituted for the 2014 season.

A four-team playoff could double the reported $180 million the BCS distributed to schools in 2011.

Kat Ding defended her NCAA championship on the uneven bars before adding another title on the floor exercise, in Duluth, Ga. The Georgia senior almost achieved perfection on the uneven bars. Four of six judges awarded Ding perfect 10s. She drew 9.95s from the other two.

SOCCER: Sergio Aguero and Samir Nasri scored as visiting Manchester City relegated Wolverhampton from the English Premier League with a 2-0 win and moved to within three points of leader Manchester United. United's 4-4 tie at home to Everton gave second-place City the chance to tighten the race when the two Manchester clubs meet on April 30.

Chris Pontius had a hat-trick and Nick De Leon added a goal as host D.C. United thumped the New York Red Bulls, 4-1, in Major League Soccer. Thierry Henry scored for New York.

In Mexico City, Club America beat Puebla, 3-2, with American midfielder DaMarcus Beasley scoring his seventh goal since joining Puebla last summer.

Bolton midfielder Fabrice Muamba calls his recovery "more than a miracle" in his first interview since going into cardiac arrest during a March 17 game. Muamba, who doesn't know if he will play again, praised Andrew Deaner, the cardiologist who left his seat at the match to help treat the stricken player. "He is the reason I have been able to hold my baby son again and continue my life."

Bayer Leverkusen defender Michal Kadlec will have an operation Monday after his nose was broken in a nightclub attack by two fans of German rival Cologne on Saturday night. Cologne said that the two were not affiliated with the team and that they were known to be "violent criminals in sport."

- Staff and wire reports