Milan, 9 Mar (LaPresse) – ‘Things have changed for me in the last two years. I've struggled to play at the level I want. Every now and then, I have a couple of good tournaments, but most of the time it's really a challenge.’ This is how Novak Djokovic commented on his defeat against Dutchman Botic van de Zandschulp at the Atp Masters 1000 tournament in Indian Wells. The former world number 1 cannot hide his disappointment, but seems to have no intention of quitting. ‘It's a struggle for me. I guess nothing can prepare you for a moment like that. You have to experience it and try to deal with it the best way you can,’ he said. ‘I'm sorry for the level of play I've expressed, given how I've been training these days,’ Djokovic said again. The 24-time Slam champion then complained after the match about the playing conditions. ‘The difference between centre court and the other courts is immense. On centre court the ball bounces higher even than on clay courts where it jumps more,’ he concluded.