World number one Roger Federer and U.S. Open champion Kim Clijsters were named on Tuesday as professional tennis players of the year for 2005.

The 24-year-old Federer had a remarkable season, compiling an 81-4 record and capturing a circuit-leading 11 titles including Wimbledon and the U.S. Open.

The Swiss became only fifth player in the 32-year history of the Association of Tennis Professionals rankings to hold the top spot every week during the calendar year.

Clijsters, who rose to No. 2 in the rankings after a wrist injury sidelined her for most of 2004, was named the Women's Tennis Association Tour Player of the Year.

The 22-year-old Belgian, who won nine titles and captured her first grand slam singles crown at the U.S. Open, was also named Comeback Player of the Year.

The ATP Doubles Team of the Year went to Californian twins Bob and Mike Bryan, while American Lisa Raymond and Australian Samantha Stosur took the women's doubles honours.

(Writing by Steve Ginsburg in Washington)