The top-ranked American men’s tennis player, Jack Sock clinched the final spot in the World Top 8 for the ATP World Tour Finals, which started yesterday at London’s 02 Arena.

The twenty-five year old was ranked 24th in the race to London going into the last tournament of the regular season-the Paris Masters, but won that event. Combined with a number of his rivals falling by the wayside and Nadal’s withdrawal through injury, he booked his ticket to the year-end championship.

Now ranked the Worlds’s Number 9 in the men’s singles the aggressive baseliner with a lethal serve and forehand is considered one of the world’s top players in both singles and doubles, where he also reached the 9th spot in 2015, winning the Wimbledon Doubles title alongside Vasek Pospisil the previous year.

In 2011 he won the Mixed Doubles with Melanie Oudin at the US Open and a Gold medal with Bethany Mattek-Sands and the bronze in the Men’s doubles partnering Steve Johnson at the 2016 Rio Olympics.

I met him after Friday’s practice session at the 02. He joked he couldn’t sign my drawing because he is now in the Nike stable and I had drawn him with his previous sponsor’s Adidas logo, but he did.