Among them: at 5’ 7”, he's the shortest man to reach the Top 8 on the ATP rankings since Harold Solomon in 1981.

Some of the best players in ATP history have missed out on the world No 1 ranking - we rank nine of the greatest.

Here's the full list of title winners at the Rotterdam Open. Arthur Ashe and Roger Federer are the only three-time champions.

One of the best players never to reach world No 1, former world No 3 del Potro picked up 10 wins over top-ranked players ...