"Super Dan", as Chinese top shuttler Lin Dan was nicknamed, said he already felt his dominance challenged by a new force from his own team.
Lin, clinching China Masters title here on Sunday, keeps his tight grip on the top position in the Chinese badminton national team and is arguably the best player in the world, being the first player to win three world titles and only the second to hold the Olympic and world titles at the same time.
Despite all the dominance, the 26-year-old, however, felt clear challenges from the national team which recruits promising young players from all over the vast country of 1.3 billion people.
"I always think China has the world top men's singles players in numbers. It is always more difficult for me to play my teammates than foreign players because we know each well," he said.