Stockholm Open will be celebrated for the 50th time on Sunday. Last week Bjorn Borg attended the tournament to watch his son Leo playing the pre-qualifying tournament. 'He will work hard and will have discipline and a big heart.

Leo has a great heart and loves what he does', Bjorn said on Leo. Borg made his debut as a 15-year-old at the tournament in 1971. After several attempts, he finally won the title in 1980 beating the American John McEnroe in the final.

'It was tough', Borg admitted. 'I had won much more but not Stockholm Open. But Stockholm Open meant a lot to me. It's a competition that all the Swedish players want to play. The atmosphere with the wooden ground is cool.' Another event that Borg won was Davis Cup, that will change its format in 2019 as best of five sets matches will not be played anymore.

'It's a shame not to save Davis Cup. At the same time, I understand all the players. They play so many events during the year. It's just a damage', Borg confessed. 'It's important to see now, starting with Sweden-Colombia (in February 2019).

What players are included? Everyone or half of them? No one knows it.' Borg was the Team Europe captain at the Laver Cup last month, he enjoyed a lot alongside the Swiss Roger Federer, Novak Djokovic and all the other members, and looks forward to having a similar experience again next year in Geneva, Switzerland.

Now he is definitely focused on Leo's career. ALSO READ: Rafael Nadal: Worse players than David Ferrer won a Grand Slam title