Former world No.1 Kim Clijsters of Belgium on Thursday announced her return to competitive tennis almost two years after retiring from the sport at just 23 years old. Belgium's Kim Clijsters defeated 6-3, 6-1 France's Mary Pierce in the Women's Final at the 2005 US Open, held at the Arthur Ashe stadium in Flushing Meadows, New York, USA, on September 10, 2005. Photo by Nicolas Khayat/Cameleon/ABACAPRESS.COM