2000–2003: Junior years Gil made his debut in a junior tournament in July 2000 at the
Grade 4 Taça Diogo Nápoles in
Porto, by playing the main draw in the doubles event. His first main draw singles event came later in August in
Vila do Conde. In 2003, his final junior season, Gil turned professional after entering his first singles main draw event at a Futures event in Espinho in February.
2004–2007: Early career and ATP debut 2004 was Gil's first full season at a professional tour. Gil was called for the
Portugal Davis Cup team for the first time this season. Playing in the
Europe/Africa Zone Group II, he won two matches in his debut against
Tunisia in April, but lost all his three matches against
Serbia and Montenegro later in July. He played regularly at that level the rest of the season and reached his first doubles final in
Bogotá. At ATP Tour level, Gil entered again in the
Estoril Open doubles event and lost in the first round with
Leonardo Tavares. In 2006, Gil made his ATP Tour debut in a singles event at the
2006 Estoril Open. In the doubles event, Gil teamed up with
Gonçalo Nicau and lost in the first round. In June, he won his first Challenger singles titles in
Sassuolo and was runner-up in the doubles event at the
Milan Challenger. Earlier in May, Gil played his last Futures tournaments until 2013. He entered his first ATP tournament outside of Portugal at the
Grand Prix Hassan II, where he lost in the first round to
Julien Benneteau. At the
Estoril Open, Gil was defeated by
Richard Gasquet in the second round. The Challenger Tour remained Gil's main focus in 2007. He won one singles titles in
Seville in September, and reached four doubles finals (
Bogotá,
Karlsruhe,
Fürth and
Manerbio). The 2007 Davis Cup edition was not successful for Gil, as he lost all his five matches against
Georgia and
Netherlands. He reached the doubles final in
Napoli in March. Then, he entered his first ATP Tour of the season at the
Estoril Open where he reached the quarterfinals for the second time, after wins over
Nicolas Mahut and
João Sousa. After a return to the Challenger Tour, during which he won his first Challenger doubles title in
Marrakech, Gil made his Grand Slam main draw debut at the
French Open. In June, Gil won the Challenger singles title in Sassuolo and entered the
Wimbledon Championships. Between July and August, Gil won another Challenger singles title in
Istanbul and a doubles title in
Turin. Gil then entered directly in the main draw of the
US Open, where he lost again to Chardy in the first round. Gil played Challenger tournaments the remaining season, without reaching any finals. At the
SA Tennis Open, he defeated
Guillermo García López to become the second Portuguese to reach the semifinals at this level, after his coach João Cunha e Silva in
1992. Gil was defeated then by
Jo-Wilfried Tsonga. At the
Brasil Open, and after beating world no. 18 and reigning champion
Nicolás Almagro, Gil lost in the semifinals to
Thomaz Bellucci. In result, he broke his shared record with Nuno Marques and became the sole holder of the highest ranking ever for a Portuguese player, at no. 82. In early March, Gil played against Cyprus at the Davis Cup. After winning the first match over
Photos Kallias, he lost both his doubles and singles matches and Portugal moved to the relegation round. Gil then entered his first career
Masters 1000 event in
Miami, as a qualifier. He moved up again in the ATP ranking, and entered April as world no. 70. Gil continued his form with a quarterfinals presence at the
Grand Prix Hassan II, and fell in the second round at the
Barcelona Open to Nadal again. A brief return to the Challenger Tour earned Gil a singles runner-up participation in
Tunis. After an early exit at the
Kitzbühel Open, Gil entered the
French Open, where he lost in the first round to
David Ferrer. Despite the results, he ended the month ranked in his highest position during 2009, at no. 66. In July, Gil again was called for Portugal Davis Cup team. Facing Algeria, he won his singles and doubles matches, thus helping Portugal to secure a place in the
Europe/Africa Zone Group II the following year. After losing in the first round of another ATP tournament, the
Romanian Open, Gil decided to move back to the Challenger Tour – he won singles and doubles title in
Napoli in the end of September.
2010: Estoril Open singles runner-up Gil began 2010 season with first round exits at the
Qatar Open and the
Sydney International, both times against
Potito Starace. Making his main draw debut at the
Australian Open, Gil retired during a first round match against
David Ferrer, when was trailing 6–0, 6–0, 2–0. Gil's early round struggles continued at the
Brasil Open, the
ATP Buenos Aires, the
Mexican Open and the
Indian Wells Masters. By the end of March, Gil was outside the top 100, he started playing qualifying rounds and returned to the Challenger Tour. In the final, Gil lost to defending champion
Albert Montañés, after squandering a 3–0 advantage in the final set. At the
French Open, he did not make it past qualifying rounds and moved to Challenger. He rebounded with a Challenger doubles title in
Turin. Then, he lost in the early rounds at the
Swiss Open and the
Connecticut Open, and took part in several Challenger tournaments. However, he partnered
Daniel Gimeno Traver in the
doubles event to reach the third round of a Grand Slam tournament for the first time, where they lost to fifth seeds
Łukasz Kubot and
Oliver Marach. Gil's three wins over
Bosnia and Herzegovina at the Davis Cup in September contributed for Portugal's promotion to
Europe/Africa Zone Group I in 2011. Then, he won his first match at a Grand Slam tournament and became the first Portuguese since
Nuno Marques in
1991 to do so at the
Australian Open, with a 5-set win over
Pablo Cuevas. Gil lost in the second round to
Gaël Monfils. In February, at the
Movistar Open, he lost in First round to no. 52
Tommy Robredo by 2–6, 6–3, 6–4. Later, he lost in the first round of
Copa Claro to no. 55
Fabio Fognini by 1–6, 6–2, 6–2. A week later, at Abierto Mexicano Telcel he suffer his third consecutive lost in a first round of a tournament to no. 86
Filippo Volandri by 6–1, 3–6, 6–4. In March, at the
Miami Open Gil defeated no. 146
Paul Capdeville 6–1, 3–6, 7–6(6) in the first round. He then lost to no. 12
Nicolás Almagro by 6–4, 3–6, 6–2. In April, competing in
Casablanca, Gil reached the Second round where he was defeated 6–3, 6–4 by
Gilles Simon, ranked 27th. At the
Monte-Carlo Rolex Masters, he defeated world number 10 and 8th seed
Gaël Monfils, reaching the quarterfinals of an
ATP World Tour Masters 1000 event for the first time. Despite the 6–2, 6–1 loss to world number 4
Andy Murray, Gil collected 205 points which allowed him to reach a career-high world ranking number 64. A week later, after achieving the quarter-finals in a challenger in Naples, defeated by
Ivo Minář (122nd), by 6–7(5), 6–3, 3–6, where he reached a new career-high world ranking number 62, a week before is favorite tournament in Estoril, Portugal where he has many points to defend after losing in the final in the previous year. Gil was initially invited for the
Estoril Open as a wildcard, in virtue of his low ranking, but he eventually qualified directly, because of pre-tournament drop-outs. He defeated in the first round world no. 159
Flavio Cipolla by 6–3, 6–2, but lost in the second round to the second-seed and world no. 15
Fernando Verdasco by 6–1, 7–6(5). In May, he failed to pass the qualifying rounds of
Internazionali BNL d'Italia, losing to no. 143
Łukasz Kubot by 6–3, 7–6(2). At the
2011 French Open he was eliminated in first round, losing to no. 29
Marcos Baghdatis by 7–6(4), 6–2, 6–2. In June, he lost in
Eastbourne in the first round to no. 106
Illya Marchenko by 6–1, 6–3. At
Wimbledon, he faced no. 84
Dudi Sela in the first round and lost 6–4, 6–1, 6–4. In July, in the first round in
Gstaad he beat the qualifier
João Souza world no. 112 by 4–6, 6–3, 6–4. He lost in the second round to the world no. 20
Fernando Verdasco by 6–3, 6–2. In August, in the first round in
Winston-Salem Open he lost to the world no. 102
Steve Darcis by 3–6, 6–3, 6–4. A week later, at the
US Open, he lost in First round to world no. 23
Alexandr Dolgopolov by 6–4, 6–2, 7–5 in 1h58m. In September, he reached the semi-final in the Genova Challenger. In the first round in
Bucharest he beat world no. 106
Jérémy Chardy by 2–6, 6–4, 6–3 in 2h14m. He lost in the second round to the world no. 183
Alessandro Giannessi by 7–6(2), 0–6, 6–3 in 2h25m. In October, he reached the quarter-finals in the Palermo Challenger. In November, he reached the quarter-finals in the
Buenos Aires Challenger in his last tournament of the season losing to his friend
Gastão Elias by 1–6, 7–5, 7–5 in 2h57m after his opponent saved 2 match points when Gil was leading by 6–1, 5–4. Gil finished the year placed in the 102nd position in the world once again behind Rui Machado.
2012: ATP doubles title Gil began the season losing in the
Aircel Chennai Open in the first round to
Go Soeda (120th) by 6–2, 6–7(4), 7–5 in 2h38m. A week later, at
Apia International Sydney, he won the first round in the qualifying where he defeated world number 1099
Sadik Kadir by 6–4, 6–4 in 1h15m, in the second round he lost to no. 105
Stéphane Robert by 6–4, 6–1 in 1h5m, losing the 16 points he had achieved last year by reaching the second round. At the
Australian Open, he won for the second time in the first round of a
Grand Slam by defeating
Ivan Dodig (36th) 2–6, 6–1, 6–1, 4–1, ret in 2h1m. Gil then made history by becoming the first Portuguese tennis player to reach the 3rd round of a Grand Slam tournament after downing Spain's
Marcel Granollers (28th) in 4 sets by 6–3, 4–6, 6–4, 6–3, in 2h48m. In the third round, Gil lost to the world no. 6
Jo-Wilfried Tsonga by 6–2, 6–2, 6–2 in 1h31m. Tsonga saved all six break points faced on serve and capitalised on six of his seven opportunities. After the Open, Gil reentered in top-100. He then won the first round of
VTR Open in Viña del Mar against world no. 106
Paolo Lorenzi. After splitting sets, Gil took command of the match in the third set, breaking the Italian four times to win the hard-fought encounter 6–3, 5–7, 6–1 in two hours and 26 minutes. Gil finished the match eight for 22 on his break point opportunities. In the second round, Gil ousted fourth seed and world no. 44
Pablo Andújar by 6–2, 6–1. Gil dominated with his return game, breaking the Spaniard six times, winning 66 per cent of his return points to clinch the upset in 57 minutes. In the quarter-finals, Gil lost to world no. 82
Jérémy Chardy by 6–2, 7–6(5) in 1h36m. At the
Brasil Open, in
São Paulo, he lost to the Spanish wild card and world no. 184
Javier Martí, who is the youngest player in the main draw and converted four of 11 break point opportunities, by 6–2, 6–4 in 1h26m. A week later, he lost in the first round of
Copa Claro to no. 150
Federico Delbonis by 6–2, 6–2 in only 53m. In March, at
Indian Wells, Gil he won the first round in the qualifying where he defeated world number 193
Alex Kuznetsov by 6–1, 6–1 in only 56m, in the second round he lost to no. 165
Ruben Bemelmans by 6–4, 3–6, 6–4 in 2h5m, but he entered in the main draw as a lucky looser. He then defeated no. 427
Rhyne Williams by 6–3, 6–7(6), 6–4 in the first round in 2h26m. In the second round, he lost to world no. 11
John Isner by 7–5, 6–3 in 1h18m. At the
Miami Open Gil defeated no. 45
Thomaz Bellucci 6–3, 6–4 in the first round in 1h32m. In the second round, he lost to world no. 35 and 32nd seed
Philipp Kohlschreiber who won 78 per cent of his service points by 6–2, 7–5 in 1h12m. In April, at the
Monte-Carlo Rolex Masters, Gil won the first round in the qualifying where he defeated world number 167
Arnau Brugués Davi by 1–6, 7–6(5), 7–5 in 2h16m, in the second round he won no. 67
Steve Darcis by 6–3, 3–6, 7–6(5) in 2h6m. He then defeated no. 35
Mikhail Youzhny by 6–1, 6–3 in the first round in 1h4m. In the second round, he lost to world no. 15
Gilles Simon by 6–3, 6–0 in 1h3m. A week later, at
Barcelona Open Gil knocked out in the first round local resident and 12th seed and world no. 26
Marcel Granollers by 6–2, 6–2 in 1h13m. In the second round, he won over countryman world no. 140
João Sousa by 4–6, 6–4, 6–3 in 2h12m. In the third round, Gil lost to world no. 8 and 5th seed
Janko Tipsarević by 6–2, 6–2 in only 1h9m. In May, at the
Estoril Open Gil lost in the first round to the German no. 87
Björn Phau, the oldest player in the draw at 32, by 6–4, 6–2 in 1h21m on Central Court. Phau converted five of seven break point opportunities in the pair's first tour-level meeting. A week later in the
Madrid Open, Gil won the first round in the qualifying where he defeated world number 72
Matthew Ebden by 6–2, 7–6(3) in 1h25m, in the second round he lost to no. 107
Daniel Gimeno Traver by 7–5, 6–4 in 1h33m. At the
2012 French Open he couldn't past the first round of the qualifying, he lost to no. 151
Jerzy Janowicz by 7–5, 4–6, 6–2. In June, at the
Queen's Club Gil lost in the first round to the 11th-seeded Cypriot no. 42
Marcos Baghdatis, by 7–6(2), 4–6, 6–2, in 2h30m on Central Court. A week later, at
Wimbledon, he lost in First round of the qualifying to world no. 156
Jonathan Dasnières de Veigy by 7–5, 4–6, 6–3. In July, Gil played in
Båstad and he won in the first round to world no. 163
Marsel İlhan by 6–4, 1–6, 6–3 in 1h48m. In the second round, he lost to world no. 69
Grigor Dimitrov by 6–3, 6–4, in 1h21m. A week later, at
Hamburg, he lost in First round of the qualifying to world no. 163
Marsel Iİhan by 6–3, 6–2 in 1h15m. In August, at the
US Open, he lost in first round of the qualifying to world no. 251
Pierre-Hugues Herbert by 7–5, 6–4 in 1h22m.
2013–2015: Battling disease and return to ITF Tour Gil began the season in Viña del Mar, where he failed to qualify, losing in the third round to no. 200
Gianluca Naso. A week later, at the
Brazil Open, in
São Paulo, he lost in the first round of qualifying to
Javier Martí. A week later, at
Copa Claro, he lost in the first round of qualifying. In April, in Davis Cup competition, Gil won his rubber against
Kasparas Zemaitelis from Lithuania, 6–1, 6–3. In his return to the circuit, he failed to qualify for
Bucharest, losing in the second round to world no. 132
Flavio Cipolla. A week later, he lost in the second round of qualifying for his favorite tournament, the
Estoril Open. In May, he won in doubles a future in Coimbra with Gonçalo Falcão, in what turned out to be his last match before a temporary retirement from professional tennis. ==Playing style==