Barcelona playmaker Xavi is a major doubt for the holders Champions League quarterfinal second leg match with AC Milan on Tuesday after he failed to train with the team on Monday.

The 32-year-old is suffering from a calf problem which has been affecting him for a couple of days, according to coach Pep Guardiola.

Reggie Miller, who played his entire 17-year career with the Indiana Pacers, was named to the American Basketball Hall of Fame on Monday.

Miller is the Pacers all-time leading scorer and a five-time National Basketball Association all-star.

Germany's two-time defending Formula One champion Sebastian Vettel said on Monday his rivals should beware because he would bounce back in the next two Grand Prix' China and Bahrain.

The 24-year-old lies sixth after two races, 17 points adrift of leader Spain's two-time champion Fernando Alonso, having finished second in the opening race in Australia before failing to finish in the points in the rain-affected Malaysian race.

Barcelona coach Pep Guardiola believes it is crucial his forward line is on song against AC Milan as he fully expects the Serie A leaders to score at the Camp Nou in their Champions League quarterfinal second leg clash on Tuesday.

The defending champions cruised through the last round with a 7-1 thrashing of Bayer Leverkusen in the second leg at home with Lionel Messi scoring a record five goals in the process, but this tie is evenly balanced after a 0-0 draw at the San Siro last week.

The Milwaukee Bucks gave their playoff hopes a boost by routing the Washington Wizards 112-98 Monday behind an attack led by Monta Ellis and Mike Dunleavy, who scored 17 points each.

Brandon Jennings finished with 10 points, seven assists and six rebounds, while Ersan Ilyasova had 16 points and 11 rebounds for Milwaukee, a team that is two games behind New York for the final playoff spot in the National Basketball Association's Eastern Conference. New York did not play Monday night.

Manchester United went five points clear at the top of the Premier League after late goals by Antonio Valencia and Ashley Young sealed a 2-0 win at struggling Blackburn on Monday.

Sir Alex Ferguson's side looked set for an evening of frustration at Ewood Park as an entertaining game appeared to be heading towards a goalless draw.

AC Milan and Italy striker Antonio Cassano moved a step closer to playing again following minor heart surgery when a 10-man commission approved his return on Monday.

Milan says a panel of experts gathered by the Italian Sports Medicine Federation judged Cassano's condition to be "favorable."

Bayern Munich's Dutch star Arjen Robben is set to sign a contract extension to keep him in Bavaria until 2015, according to a report in the German daily Bild on Monday.

The 28-year-old, who signed from Real Madrid in August 2009, has a contract until 2013 but according to the tabloid he will sign an extension deal at the end of April, keeping him in Munich for at least three more years.

World number one Novak Djokovic defeated Andy Murray 6-1, 7-6 (7/4) on Sunday to win his second straight ATP Miami Masters title and third overall.

Djokovic, who won here for the first time in 2007, became just the third man to win the title three or more times, along with Andre Agassi and Pete Sampras.

Victory is the only option for Barcelona as the reigning champions welcome AC Milan to the Camp Nou in the most finely balanced of the Champions League quarterfinals this week.

With Real Madrid and Bayern Munich all but through to the semifinals and Chelsea also in a great position to progress after a first-leg away win, most attention will be on Tuesday's return match between two continental heavyweights.