Heather Watson will lead Great Britain squad for their Billie Jean King Cup play-off tie against Mexico. British number one Johanna Konta was not available for selection as she continues to manage a longstanding knee problem. Heather Watson is the highest-ranked player in the squad, which also includes Harriet Dart, Katie Swan, Jodie Burrage and Katie Boulter. The tie will take place behind closed doors in Roehampton on 16-17 April. With the WTA season about to enter the clay swing, Konta did not