 They were mopping, but there's a lot of play to look forward to. So many storylines on the first morning of tennis's biggest tournament. Plenty of injury concerns, too. Novak Djokovic has had knee surgery three and a half weeks ago, but it looks as though he's going to be back trying to win a record-tying eighth Wimbledon title. He practiced on Saturday and will play Czech Republic's Vit Kopriva.