At the age of 34, Cooper signed to play with the Houston Comets. She led the league in scoring three consecutive years, galvanizing the franchise to a record four WNBA Championships. In addition, she was voted the WNBA's MVP in 1997 and 1998 and named Most Valuable Player in each of those four WNBA Finals. Cooper was named the 1998 Sportswoman of the Year (in the team category) by the Women's Sports Foundation. During the Comet dynasty, she was a vital part of the triple threat offense with Sheryl Swoopes and Tina Thompson. When retired in 2000, Cooper became the first player in WNBA history to score 500, 1,000, 2,000 and 2,500 career points. She scored 30 or more points in 16 of her 120 games and had a 92-game double-figure scoring streak from 1997 to 2000. She went on to coach the Phoenix Mercury for one and a half seasons (2001–2002).