Knapp has always been into sports but he credits his interest in tennis to his wife. “My wonderful wife is constantly trying out new activities. She started with yoga first and four months later, she told me one day, ‘You are coming with me to play tennis,’” he recalls. The duo started off by playing every morning twice a week, as Steffen says, morning is the best time to play in India. Usually, when a couple plays together, there is a possibility that they may get skirmish out of competitiveness. Luckily, that has never happened with Knapp and his wife. Apart from playing with his wife twice a week, his coach, Sandeep, also trains Knapp for an hour twice a week. He adds, “My coach is tough like any other Indian coach. He points out my bad techniques in every session and makes me run from left to right.” Knapp admits that when he started playing tennis, his backhand technique was not good, and that is something his coach helped to improve over the past few months. “I follow tennis matches but I cannot imagine myself playing it professionally anytime soon.” He gets a good laugh anytime he imagines himself as a professional.