At 7:10 on September 9, the second semi-final of the US Open men's singles staged a wonderful showdown. The top seed and defending champion Aka attacked to challenge the 2021 US Open champion Mei. The focus battle is about to begin! Frankly speaking, it will not be a surprise whether the two of them win or lose. Aka already holds two Grand Slam titles. He defeated Djokovic in this year's Wimbledon final and is aiming for his third Grand Slam title. Mr. Mei performed even better in hard court events, reaching the Grand Slam finals 4 times, winning 1 crown and 1 runner-up at the US Open and 2 runner-ups at the Australian Open.