What you dont realize is that Serena developed that blister during her first rould match with Loit. It has not affected her play in the later rounds until the semifinal with Kim, The bandage and dressing had slipped and was causing discomfort. There was ALREADY a pad with a cutout that encircled the blister on her foot and the trainer made a new pad and retaped the foot. Kim was up 2-1 at the time, then proceeded to WIN the next THREE games to go up 5-1. The only problem was that Serena then WON the next SIX games for the win.
The injury timeout CLEARLY had NO EFFECT on the match, as some would like to believe.
However if she had been denied treatment She would have probably lost 6-1. Would that have been fair???