"I can't stay No. 1 for fifty years, you know. We'll see what happens"

In this quote, professional tennis gamer Roger Federer is acknowledging the truth that he can not stay the top ranked player worldwide for a prolonged period of time. He recognizes that his reign at the top will eventually concern an end, and he is open to whatever may happen in the future. This statement reveals Federer's humility and understanding that the sport of tennis is constantly developing and that he may not constantly be at the top. It also reflects his determination to continue striving and adjusting to any changes that may occur in order to keep his success.