Clare Balding introduces highlights from the first day of the 2017 Wimbledon Championships. Clare is in the company of tennis legends to reflect on a fascinating selection of opening round matches in SW19, including Andy Murray's first step towards what he hopes will be an historic third men's singles title. Could anyone emulate Marcus Willis's sensational display in 2016 in which the then world-ranked number 772 knocked out world number 54 Ricardas Berankis?