Tim Duncan sues financial adviser for fraud in Texas court

NBA superstar Tim Duncan has filed a lawsuit seeking at least $1 million in damages against a longtime friend and financial adviser the basketball player says cheated him in his investments.

The lawsuit was filed on Thursday in a Texas court against Atlanta businessman Charles Banks, who Duncan said he met during his 1997-98 rookie season in the NBA with the San Antonio Spurs. According to a source close to the case, Duncan's total investment with Banks was in excess of $20 million.

At one point, Duncan says Banks forged his signature on loan documents, claiming Duncan had agreed to guarantee a bank loan to Gameday, something Duncan said he did not do.