1 Roger Federer at the 2010 Italian Open after throwing away six match points, he told reporters that "I shit my pants a little bit there...excuse my language" and has bragged about his racquet-throwing "skills" in an on-court interview.

[9] On a telecast during the 2010 Western and Southern Financial Group Masters from Cincinnati, broadcasters Brad Gilbert, Patrick McEnroe and Chris Fowler compared Gulbis to former world No.

[11] The next year, at the French Open, when Gulbis was asked if he would encourage his sisters to pursue professional tennis, he said he believed that women should "focus on family and kids".

Gulbis announced his arrival on the Grand Slam stage in the 2007 French Open by defeating the British veteran, Tim Henman in straight sets to advance to the second round.

He reached the second round of the 2008 Pacific Life Open, where he lost a tight match to former Grand Slam finalist David Nalbandian in a final set tiebreak.

At the 2008 Cincinnati Masters, Gulbis defeated Jarkko Nieminen, Arnaud Clément, and James Blake, but succumbed in the quarterfinals to third seed Novak Djokovic.

However, he entered the doubles draw with Russian Dmitry Tursunov and won the championship, defeating top seeds Ashley Fisher and Jordan Kerr of Australia in the final.

At the 2009 Rakuten Japan Open Tennis Championships, Gulbis advanced to the quarterfinals, upsetting sixth seed Radek Štěpánek in the first round as a qualifier, then defeating top-20 player Juan Mónaco in the second in straight sets.

At the end of February, he then competed in the Delray Beach International Tennis Championships, an outdoor hard-court tournament, where he won his maiden ATP tour title.

At his next tournament, the ATP 500 Barcelona Open Banco Sabadell, Gulbis reached the quarterfinals, defeating Peter Luczak, Jérémy Chardy, and Albert Ramos-Viñolas, all in straight sets.

In the next round, Gulbis defeated Feliciano López to reach his first semifinal at an ATP Masters 1000 tournament, where he lost to Rafael Nadal in a tight, three-set match, hitting 50 winners and 59 errors throughout.

He next played in the Legg Mason Tennis Classic, where he received a first-round bye, but quickly retired in the second round to Ukrainian Illya Marchenko, citing fatigue.

He then played the ATP World Tour Masters 1000 Western & Southern Open, defeating Donald Young in the first round and 13th seed Jürgen Melzer in the second, both in close matches.

Gulbis then took three weeks off to play for the Latvian Davis Cup team against Poland, winning both of his singles rubbers against Jerzy Janowicz and Michał Przysiężny.

Gulbis suffered two more consecutive first-round losses at the hands of Richard Gasquet, at the Shanghai Rolex Masters, and Novak Djokovic, at the Swiss Indoors.

He then defeated Sergiy Stakhovsky in the quarterfinals, before losing to eventual champion Gilles Simon of France in the semifinals, citing fatigue as a cause for his low intensity.

His next tournament was the 2011 Australian Open, where he lost in the first round to unseeded German Benjamin Becker in straight sets, again citing fatigue and illness for his poor showing.

Gulbis' season did little to improve as he next played in the 2011 BNP Paribas Open, receiving a bye through the first round, before struggling with Lu Yen-Hsun, but ultimately prevailing, with the first two sets going to tiebreaks.

He proceeded to lose his next four matches in a row: against Blaž Kavčič at the French Open, against Adrian Mannarino at the Queen's Club Championships, against Dmitri Tursunov at Wimbledon (which marked his seventh, consecutive first-round exit at a Grand Slam, and after which he took nearly a month off from tennis to train with his new coach), and against former World No.

However, Gulbis won his second ATP title at the Farmers Classic in Los Angeles, where he snapped his five-match losing streak by defeating fifth seed Belgian Xavier Malisse in a final set tiebreak in the first-round.

[25] Gulbis began the year with three first-round losses at Doha, Melbourne and Memphis, but in between won two singles rubbers for the Latvian Davis Cup match against Egypt.

Gulbis defeated Feliciano López, Fabio Fognini, and Andy Murray to make the quarterfinals of the Rogers Cup, losing to finalist Milos Raonic in three sets.

Gulbis started the new season in Doha, where he reached the quarterfinals, losing to eventual champion Rafael Nadal for the seventh time in his career, in straight sets.

Gulbis won his fifth ATP title at the 2014 Open 13 in Marseille, beating 3 Frenchmen in succession without losing a set – Nicolas Mahut, then world No.9 Richard Gasquet in the semi-final, then No.10 Jo-Wilfried Tsonga in the final.

Gulbis then played in Acapulco where he was seeded seventh, beating Yen-hsun Lu and David Goffin, then losing two sets to one to eventual champion Grigor Dimitrov in the quarterfinals.

At the US Open, Gulbis crucially lost to Dominic Thiem in five sets, losing the final three, what seemed to have a negative impact on his confidence and physical condition for the rest of the season.

171 Quentin Halys at the 2016 Open Sud de France, but lost in the round of 16 to Richard Gasquet in straight sets, who went on to retain his title from the previous year.

Gulbis appeared resurgent at the French Open by beating Andreas Seppi, João Sousa and Jo-Wilfried Tsonga, losing his first set of the tournament only to the latter.

He repeated this feat at the 2021 US Open qualifying where he defeated 26th seed Marc Polmans and Filip Horanský before losing to Quentin Halys in straight sets.

Gulbis plays an extremely aggressive, winner-driven game, which often leads to a high unforced error count, making his consistency an issue in tough matches, often causing him to be likened to Marat Safin.