What made Serena Williams so dominant | Jenny Claffey

Former tennis pro, Jenny Claffey, explains why Serena Williams will retire as one of the greats of tennis and what made her such a serial winner. Catch OTB's sports breakfast show LIVE weekday mornings from 7:30am or just search for OTB AM and get the podcast on the OTB Sports app or wherever you listen to yours. SUBSCRIBE and FOLLOW the OTB AM podcast. #OTBAM is live weekday mornings from 7:30am across Off The Ball, in association with Gillette | #EffortlessFlow