50 Cent: Eminem is like Serena Williams

Rap superstar 50 Cent lives in awe of the success of his mentor Eminem and likens him to tennis champion Serena Williams.

Eminem has defied racial stereotype to conquer the hip-hop world, much like Williams, who became the first black player to win a grand slam tennis title in 40 years when she won the US Open in 1999.