Ah no. That's an old picture about 2 years ago. When I first started playing tennis I tend to have my thumb directly along the grip when I hit the backhand. But over the last year I've removed that little habit and i'm holding the racket the conventional way now for every topspin backhand that I hit. For the first two years of tennis, my single handed backhand was actually my stronger wing and better than my forehand by far. But now the forehand wing has really overshadowed the backhand. It was a pleasure playing in the early days as everyone would usually aim for the backhand seeing as it was most people's weaker side. I'd just keep killing it down the line.