Question: The 2002–03 NBA season was the Wizards' 42nd season in the National Basketball Association, During the offseason, the Wizards signed which free agent, an American former professional basketball player who played for eight different teams during a 14-year career in the National Basketball Association (NBA)?
Sentence (from "2002–03 Milwaukee Bucks season"): Following the season, Payton signed as a free agent with the Los Angeles Lakers, Sam Cassell and Ervin Johnson were both traded to the Minnesota Timberwolves, head coach George Karl was fired and Anthony Mason retired.
Relevant evidence: No