Djokovic, Wawrinka Lead Group A Charge On Day Two Group A takes centre stage on Day 2 of the Barclays ATP World Tour Finals. A star-studded evening session is headlined by world No. 1 Novak Djokovic and top-ranked doubles duo Bob and Mike Bryan. [[More Tennis News on ATPWorldTour.com]] Author: sportallinfo Published: 9 novembre 2014 Categories: Tennis