Gianluigi Quinzi (; born 1 February 1996), is an Italian tennis coach and former tennis player. He reached his career-high singles ranking of world No. 142 rankings in 2019. He reached his career high ranking of No. 1 in ITF Juniors rankings on 1 January 2013, for a week.

Quinzi won the 2013 Wimbledon Championships Junior Boys' singles title, defeating in the final Chung Hyeon.

Personal life Gianluigi was born in Cittadella on 1 February 1996 and grew up in Porto San Giorgio with his mother Carlotta, a ski racer and handball player, and his father Luca, the president of a local tennis club.

Junior career

Initially Quinzi applied himself to Alpine skiing, gaining a second place in the championships of the Trentino-Alto Adige; but at seven years old, after leaving other sports as well, he focused his efforts primarily on tennis. At the age of 8 he was admitted to the academy of the talent scout Nick Bollettieri and he moved to Florida with his mother and little brother. In the same year he won at the Little Mo, tournament played in Florida which is reserved for Under-10 players. At thirteen years old, he became the youngest player in the ITF Junior rankings and the next year he triumphed in four tournaments in a row with a series of twenty victories.

gedfourteen – in 2010 – he won the Honduras Junior Bowl, on clay court, by defeating in the final Walner Espinoza, becoming the youngest Italian player to win an ITF Junior tournament. With the results obtained in 2010, Quinzi was nominated Player of the Year, in the category Under-14, by the European Tennis Association.

Quinzi obtained his best result in Italy: in Milan he won the Trofeo Bonfiglio in 2012, beating Temür Ismailov in three sets. At the 2012 French Open Junior he was seeded No. 2. He was eliminated in the third round by British tennis player Kyle Edmund. At the 2012 Wimbledon Junior the young Italian, No. 3 seed, arrived in the semifinals where he lost to Luke Saville, who was No. 1 in the Junior ITF rankings and the returning champion from 2011. In September, he reached the 2012 US Open Junior quarterfinals, losing in three sets to the Japanese player Yoshihito Nishioka.

In September 2012, Quinzi won the 2012 Junior Davis Cup with Filippo Baldi: is the first time that Italy won the Junior Davis Cup, after the 2011 Italy finished runner-up with Quinzi also playing.

On 1 January 2013, Quinzi reached his best ranking of No. 1 in the world in the ITF Junior rankings, and he is the first Italian player ever to obtain this result, but it drops to second place after just one week. At 2013 Australian Open Quinzi, seeded No. 2, reached the quarterfinals, but there he was defeated by Thanasi Kokkinakis in three sets. In March, Quinzi reached the final of Banana Bowl tournament; he lost in three sets to the French player Jean Sebastien Tatlot. The following week he won Copa Gerdau beating Stefan Kozlov in the final.

At the second Junior Grand Slam of the season, the 2013 French Open, Quinzi arrived into the quarterfinals, where he lost to No. 2 Nikola Milojević. One month later, Quinzi, seeded sixth, soon reached the semifinals at 2013 Wimbledon, beating Kyle Edmund in straight sets to reach his first Junior Grand Slam final. In the final, he defeated the Korean, Chung Hyeon. He won the title without dropping a set in the entire tournament. Quinzi was the second Italian in sport history to win here; Diego Nargiso was the first to win the title in 1987.

At 2013 US Open Quinzi reached the quarterfinals but lost to Thanasi Kokkinakis in three sets.

Professional career

2011–2012: Professional debut In September 2011, Quinzi obtained his first ATP point at the 2011 Mazatlán Open beating the Swiss tennis player Luca Margaroli in the first round. His first best result in ITF Men's Circuit went in 2012 Pozzuoli, where he reached the quarterfinals, but he lost to the Italian player Alessio di Mauro. In September 2012, he reached his first semifinal match in the ITF tournament of Manzanillo, in Mexico. In the following two months he also reached the semifinals in other 4 ITF tournaments (Santa Cruz, Santiago, Santa Maria and Lins).

On November 23, 2012, he reached is first ITF final in the tournament of Curico, Chile ($10,000, on clay court), defeating Juan Carlos Sáez in the semifinal, but he lost to Guillermo Rivera Aránguiz in straight sets. Quinzi, at the end of 2012, was world rank No. 561.

2013 In 2013 in the first ITF Futures tournament he took part, in Bogotá, he reached his second career final. He lost to Carlos Salamanca in straight sets.

In April Quinzi officially entered in the Top 500, at the time the youngest player of the ATP rankings among the first 500. He then received a wild card to enter the main draw of the 2013 Rai Open, but he lost in the first round to Frederico Gil in three sets. The following week he took part to his second ITF tournament of the season, in Sharm El Sheik; he reached his third career ITF final. He lost to Mohamed Safwat in three sets. Two weeks later, again in Egypt, Quinzi reached the semifinals of the F6 Futures tournament on clay court, but he lost to Kevin Krawietz.

At the end of May Quinzi played his fourth ITF tournament of the season, in Casablanca ($10.000, clay). After beating the n.1 seed Sergio Gutiérrez Ferrol in the quarterfinals, and after receiving a walkover in the semifinals, Quinzi reached his fourth career final in an ITF tournament. Here he won his first career title beating in three sets Lamine Ouahab and entered, for the first time, the Top 400 of the ATP World rankings.

In July, Quinzi received a wildcard to join the main draw of the 2013 Guzzini Challenger: here he reached his first win in a Challenger tournament, beating fellow Italian Stefano Travaglia in three sets, but lost in the second round to Flavio Cipolla. In August Quinzi took part to two other Challenger tournaments in Italy but lost in the first round to Filippo Volandri and Paolo Lorenzi. In September Quinzi continued playing in ATP Challenger Tour, taking part to some tournaments in South America: at 2013 Quito Challenger Quinzi lost in the second round to eventual semifinalist Giovanni Lapentti; in Porto Alegre, one week later, he entered the main draw as a qualifier and stunned Gastão Elias in the first round. Quinzi then reached for the first time the quarterfinals round on an ATP Challenger Tour tournament, defeating Leonardo Kirche, but lost in three sets to Pedro Sousa.

In November, in Colombia, Quinzi reach for the first time the semifinals in a Challenger tournament; he failed to reach the final losing in three sets to Leonardo Mayer. He finished the season losing to Pavel Krainik in the semifinals of a Future tournament in Mérida, Mexico. At the end of 2013, Quinzi was world rank No. 328.

2014

Quinzi started the season in Zagreb where he obtained his first ATP World Tour victory beating Yannick Mertens in straight sets in the qualifying draw of the 2014 PBZ Zagreb Indoors. Anyway, he lost to Peđa Krstin in the following round. Then Quinzi played in Bergamo having received a wildcard into the singles main draw of the 2014 Trofeo Faip–Perrel where he fell in the first round.

In the following months Quinzi took part to other tournaments around the world, without obtaining any significant result: he lost in the first round of the 2014 All Japan Indoor Tennis Championships; then he was defeated by Argentine player Facundo Argüello in the second round of the 2014 Challenger ATP Cachantún Cup and in the first round of the 2014 Rome Open by Taro Daniel.

In May, after the divorce from his coach Eduardo Medica, Quinzi obtained his best results in 2014, capturing three $10,000 ITF tournaments in three weeks – and winning 15 matches in a row: in Galați, Romania, and then in Casablanca.

Later in the year, in August, a wrist injury stopped Quinzi's for four months. After some disappointing results, in November Quinzi reached the quarterfinals of the 2014 Uruguay Open losing in straight sets to Pedro Cachin; he finished the season in Argentina, where he took part at two ITF events in Mendoza (losing to eventual champion Grzegorz Panfil in the semifinals, and falling in the first round the following week). At the end of 2014 Quinzi was world rank No. 424.

2015 At the end of January Quinzi took part at his first 2015 tournament in Palm Coast: playing on clay, the Italian reached the quarterfinals of the $10.000 ITF event. A couple of weeks later, Quinzi won his fifth Future tournament of his career, beating Federico Coria on the green clay of Sunrise (Florida). At the 2015 Argentina Open in Buenos Aires he lost to Thiago Monteiro in straight sets in the second round of the qualifying draw; in March the Italian qualified for the main draw of the 2015 Challenger ATP Cachantún Cup but lost in the first round to Juan Ignacio Londero. Quinzi then obtained a wildcard into the qualifying draw of the Miami Masters, but he was defeated by Thiemo de Bakker.

In April he reached the quarterfinals of the 2015 Tennis Napoli Cup as a wildcard beating the No. 3 seed and world No. 104 Blaž Rola 6–3, 6–1 and fellow Italian Flavio Cipolla in the first two rounds; he lost to Marco Cecchinato.

2017

After being awarded a wildcard thanks to a qualifying tournament, Quinzi took part in the first edition of the 2017 Next Generation ATP Finals, held in Milan, Italy. He lost all his matches in round robin, versus Andrej Rublev, Denis Shapovalov and Hyeon Chung.

2019 In the quarterfinals of the Bergamo challenger, he lost in straigh sets against Italian seventeen-year-old wild card Jannik Sinner (future multiple Grand Slam champion and ATP #1), who won the tournament.

2021: Retirement Quinzi retired at 25 years old in July 2021 due failed to satisfy high expectations and competitive stress.

Performance timeline

Singles Tournament2015201620172018201920202021SRW–LWin %Grand Slam tournamentsAustralian OpenAAAAQ1AA0 / 00–0French OpenAAAAQ2AA0 / 00–0WimbledonAAQ1AANHA0 / 00–0US OpenAAAQ1AAA0 / 00–0Win–loss0–00–00–00–00–00–00–00 / 00–0ATP Tour Masters 1000Miami OpenQ1AAAQ1AA0 / 00–0Indian Wells MastersAAAAQ1NHA0 / 00–0Italian OpenQ1AAAAAA0 / 00–0Win–loss0–00–00–00–00–00–00–00 / 00–0

ATP Challenger and ITF Futures finals

Singles: 20 (14–6) LegendATP Challenger (2–1)ITF Futures (12–5)Finals by surfaceHard (3–1)Clay (11–5)Grass (0–0)Carpet (0–0)

ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Chile F12, CuricóFuturesClay Guillermo Rivera Aránguiz4–6, 4–6Loss0–2Colombia F2, BogotáFuturesClay Carlos Salamanca6–7(3–7), 6–7(2–7)Loss0–3Egypt F4, Sharm El SheikhFuturesClay Mohamed Safwat2–6, 6–1, 3–6Win1–3Morocco F1, CasablancaFuturesClay Lamine Ouahab7–6(7–2), 1–6, 6-4Win2–3Romania F1, GalațiFuturesClay Vasile Antonescu6–3, 2–6, 6–3Win3–3Morocco F1, SafiFuturesClay Hugo Dellien6–2, 6–2Win4–3Morocco F2, CasablancaFuturesClay Gianni Mina6–2, 6–3Win5–3USA F7, SunriseFuturesClay Federico Coria6–4, 6–4Win6–3Netherlands F5, OldenzaalFuturesClay Jesse Huta Galung7–5, 2–0 ret.Win7–3Hungary F1, SzegedFuturesClay Grzegorz Panfil6–3, 7–5Win8–3Bosnia & Herzegovina F3, KiseljakFuturesClay Dejan Katić6–2, 6–4Loss8–4Norway F2, OsloFuturesHard Lucas Miedler2–6, 4–6Win9–4Norway F3, OsloFuturesHard Casper Ruud6–4, 6–2Win10–4Turkey F1, AntalyaFuturesHard Marc Sieber3–6, 6–3, 6–3Win11–4Egypt F4, Sharm El SheikhFuturesHard Jaroslav Pospíšil6–2, 6–4Win12–4Francavilla, ItalyChallengerClay Casper Ruud6–4, 6–1Win13–4Mestre, ItalyChallengerClay Gian Marco Moroni6–2, 6–2Loss13–5Perugia, ItalyChallengerClay Ulises Blanch5–7, 2–6Win14–5M25 Weston, United StatesWorld Tennis TourClay Christian Lindell3–6, 7–5, 7–5Loss14–6M25 Jablonec, Czech RepublicWorld Tennis TourClay Agustín Velotti2–6, 1–6

Doubles: 4 (2–2) LegendATP Challenger (0–1)ITF Futures (2–1)Finals by surfaceHard (1–2)Clay (1–0)Grass (0–0)Carpet (0–0)