Juan Martín del Potro

For the first time since October 2012, Grand Slam winning record holder Roger Federer has again climbed to the top of the world tennis rankings. At 36, the Swiss replaced Rafael Nadal (Spain) and officially became the oldest number one in history. The previous record holder was Andre Agassi (USA), who headed the ATP rankings at 33 in 2003.

Grigor Dimitrov produced a number of moments worthy of the highlight reel during a season filled with career milestones, including a year-end No. 3 finish in the Emirates ATP Rankings, triumph at the Nitto ATP Finals and his first ATP World Masters 1000 title at the Western & Southern Open.

Grigor Dimitrov retains his eighth position in the ATP world rankings this week. 

Bugarian tennis star Grigor Dimitrov has missed the chance to win the title of the Stockholm Open.

The Bulgarian lost at the final in Sweden against last year's champion Juan Martin del Porto, who deservedly won the game 4-6, 2-6.

Dep Potro overcame Dimitrov for just 1 hour and 25 minutes.

Grigor Dimitrov defeated 203cm giant Jerzy Janowicz with 2:0 sets and qualified for the finals of the ATP250 series at the Stockholm Tennis Championship.

The best Bulgarian tennis player won the match in a disputed race 7:5, 7:6 (5) in an hour and 38 minutes. So the balance of the matches between them is now 3:2 in favor of the eighth in the world rankings.

Grigor Dimitrov qualified for the quarterfinals at the Beijing ATP 500 tournament after a hard victory against Argentinean Juan Martin del Potro with 2:0 sets (7:6(6), 7:5), reports Sportal. 

The victory is especially valuable because the Bulgarian showed a rare psychological resilience in his game and managed to turn around the game after he was behind in both sets.

Grigor Dimitrov, placed under №3, qualified for the second round of tennis tournament in Beijing of the ATP 500 category. At the start of the main circuit this morning, the Bulgarian eliminated Damir Gumhur with 6:1, 3:6, 6:3 after almost 2 hours of play.

Bulgarian Tennis Player Grigor Dimitrov have won his first Masters 1000 title in the finals in Cincinnati after stunning 6-3, 7-5 win vs Nick Kyrgios, Australia.

In order to reach the decisive match he went through four rivals - Feliciano Lopez, the ''black cat'' Juan Martin del Potro, Yuichi Sugita and John Isner.

Bulgarian best tennis player Grigor Dimitrov has achieved a historic success and will play in the first ATP World Tour Masters 1000 final in his career so far.

After overcoming John Isner at the semi-final, Dimitrov is now to face Australian Nick Kyrgios, who won against Spanish David Ferrer.

The match between two of them will start around 23.00, reported bTV.

On his way to the quarterfinals of the Cincinnati Open, Bulgarian tennis player Grigor Dimitrov beat Argentinean Juan Martin del Porto with 6:3, 7:5 for the first time in his career, reported BGNES.

The Bulgarian tennis player had 5 losses in 5 games against this rival until now.

Dimitrov's next rival in the tournament will be Japanese Yuichi Sugita or Russian Karen Khachanov.

Bulgaria's top tennis player Grigor Dimitrov had a successful start in the Cincinnati Masters tennis tournament.

He defeated Feliciano Lopez from Spain 7:6, 6:4.

In the next round the Bulgaria faces Juan Martin del Potro of Argentina.

Dimitrov has never won a match against del Potro in the total of 5 matches between the two.