SAN FRANCISCO (AP) — Roger Federer threw in a few trick serves and several between-the-legs shots to dazzle some young players who were giddy to get a few minutes hitting with the 20-time Grand Slam champion. In town for the Laver Cup this weekend at Chase Center that he supports and promotes, Federer took part in an unveiling of six renovated courts at John McLaren Park in southeastern San Francisco on Wednesday for the event's Community Legacy Project that's done at each stop. He grunted and grinned while strategizing alongside Yannick Noah, who will be captain of Team Europe for the tennis showcase.