Patrick Mouratoglou, who began coaching Serena Williams in 2012, went on to say that offering advice to the 36-year-old American during matches could also stop her doing what she does best - turn matches around. Eduardo Munoz Alvarez / AFP
Patrick Mouratoglou, who began coaching Serena Williams in 2012, went on to say that offering advice to the 36-year-old American during matches could also stop her doing what she does best - turn matcShow more

Serena Williams' coach happy to let her handle pressure points: 'When it's perfect I don't touch it'