Djokovic is an underrated player indoors but not an underrated player on hard courts, which are now the indoor surface of choice. But even if Djokovic leads Federer, 5-4, in indoor matches, Federer still holds the overall edge. His career indoor record of 269-64 and winning percentage of 80.8 are superior to Djokovic, who is at 135-37 (78.5 percent).
Andy Murray, born a week before Djokovic, has exactly the same career indoor record of 135-37 but there will be no separating them next week.
Neither has qualified in large part because neither has played an official match since Wimbledon, although Murray at least played and lost an exhibition against Federer in Scotland on Tuesday (Djokovic has still not returned to full-blown practice).
Those career records are not quite complete, however, because they do not include indoor matches played at the Grand Slam tournaments. All of the slams, except the French Open, now have stadiums with retractable roofs that can be closed in…