During his visit in Sofia, Bulgaria, Rafael Nadal's uncle, Toni, commented on Grigor Dimitrov's potential. After winning the ATP Finals in London and achieving a career-high ranking at No. 3, the Bulgarian had a disappointing 2018 season and, helped by the eight-time Grand Slam winner Andre Agassi, he hopes to get back to the top.
'I do not know a lot about Bulgaria, but I know two Bulgarian athletes', said Toni. 'One is Hristo Stoichkov, a friend of my brother, Miguel Nadal, they have been together for many years in Barcelona. We met each other just a couple of years ago in Miami, we played golf.
Stoichkov is not good at playing golf at all. And of course I know Grigor Dimitrov, he is a very good player. He is a Rafael's friend. Unfortunately, his results are not as good as he deserves. I rememeber when he played with Rafael for the first time, I said myself that he would be the next number one.
He needs to be really strong mentally, especially in the key moments. Sometimes he turns down his legs too much and so giving strength to the ball is difficult. But the mental side is the most important thing.' Nadal will face the American Frances Tiafoe on the Rod Laver Arena on Tuesday.
Tiafoe is playing the Grand Slam quarter-finals for the first time in his career. ALSO READ: Rafael Nadal: Worse players than David Ferrer won a Grand Slam title