Serena Williams is a 'bad lady' when she's on the court: Andy Roddick

Ex-world number one Andy Roddick said 23-time Grand Slam champion Serena Williams is a "bad lady" when she is on the court. "You don't want to mess with her...She's probably been guilty of going to the press room too quickly after losses sometimes," added Roddick. Roddick stated that Serena is a joy to be around when not in "go mode".