Alexander Bublik

On the junior tour, Bublik reached a career-high ranking of No. 19 and won eleven titles (six singles and five doubles) on the International Tennis Federation (ITF) junior circuit.

2016: Futures titles and first ATP wins

Bublik began 2016 ranked World No. 964. He won his first Futures title in Doha in April 2016, followed by titles in Moscow, St. Petersburg, and Sweden.

Bublik made his ATP main-draw debut at the 2016 St. Petersburg Open, where he received wildcards into both the singles and doubles main draw.

Bublik qualified for the Kremlin Cup, where he notched the biggest win of his career, upsetting Roberto Bautista Agut in straight sets in the round of 16. He then lost a tight three-set match to the eventual champion Pablo Carreño Busta.

In November 2016, Bublik announced that he would represent Kazakhstan.

By the end of the year, Bublik's ranking had skyrocketed to No. 205.

2017: Two Challenger titles and top-100 breakthrough

After qualifying for the Australian Open, Bublik defeated 16th-seeded Lucas Pouille in his first Grand Slam match.

In February, Bublik won his first Challenger title at the Morelos Open, defeating Nicolas Jarry in the final.

At Wimbledon, Bublik received a spot in the main draw as a lucky loser. He was defeated by world No. 1 Andy Murray in his first Wimbledon appearance.

Bublik won his second Challenger title in Aptos. In September, after making the semifinals of a Challenger tournament in Istanbul, Bublik broke into the top 100 for the first time, reaching a career-high ranking of No. 95.

2018: Struggles with form

Bublik struggled for much of the 2018 season, seeing his ranking drop into the 200s. However, he prevailed in his last event of the year, winning eight matches to capture the Challenger title in Bratislava.

2019: Two ATP Finals, top-50 debut

Bublik was successful early on in 2019, winning his fourth Challenger title in Budapest, followed shortly by another title at Pau.

Bublik earned his first Masters 1000 win in Miami, winning two qualifying matches and defeating Tennys Sandgren in a third-set tiebreak.

His next tournament was in Monterrey, where he again defeated Sandgren in a third-set tiebreak en route to his sixth Challenger title. This win propelled Bublik back into the top 100.

Bublik won his first Roland Garros main-draw match over Rudolf Molleker, before losing a close four-set contest to eventual finalist Dominic Thiem.

At the tournament in Newport, Bublik reached his first ATP final, where he was defeated by the top seed John Isner.

Bublik had a successful US Open campaign, where he won two consecutive five-set matches. He came back from two sets to love down against Thomas Fabbiano to reach his first Grand Slam third round.

Bublik reached his second ATP 250 final of the season in Chengdu, where he defeated top-30 players Taylor Fritz and Grigor Dimitrov, before losing the final in a third-set tiebreak to Pablo Carreño Busta. The result helped him to reach a new career-high of No. 48 in November.

2020: First Grand Slam doubles semifinal, first top-10 singles win

At the 2020 Australian Open Bublik reached his first semifinal at a Grand Slam in doubles partnering fellow Kazakh Mikhail Kukushkin where they lost to Rajeev Ram/Joe Salisbury.

Bublik reached the semifinals of Marseille, where he lost to Stefanos Tsitsipas in straight sets. As a lucky loser, Bublik reached the quarterfinals of Hamburg, beating Albert Ramos Viñolas and Félix Auger-Aliassime, before losing to Cristian Garín in 3 sets.

He had his first top-10 victory against Gaël Monfils at the 2020 French Open, but lost to Lorenzo Sonego in the second round.

2021: Two ATP singles finals, top-35 debut, historic French Open doubles final

Bublik started his 2021 season at the Antalya Open. Seeded eighth, he reached his third ATP 250 final, notching his second top-10 victory against top seed and world No. 10, Matteo Berrettini, in the quarterfinals. He was forced to retire in the final after trailing 0–2 in the first set against Alex de Minaur.

In the Great Ocean Road Open, he lost in the third round to Stefano Travaglia. At the Australian Open, he lost in the second round to Dušan Lajović in 4 sets.

He reached his fourth final in Singapore after beating Altuğ Çelikbilek, Yoshihito Nishioka and Radu Albot. He lost to Alexei Popyrin in the final, 6–4 0–6, 2–6.

At the 2021 Miami Open, Bublik reached the quarterfinals where he lost to Jannik Sinner. This marked his best result at a Masters 1000 event to date.

At the 2021 Madrid Open, he defeated Denis Shapovalov and Aslan Karatsev to equal his previous Masters 1000 result, but lost to Casper Ruud. As a result, he achieved his career-high ranking of World No. 40 on 10 May 2021.

In only his sixth appearance at a Grand Slam in doubles, Bublik reached his second Grand Slam doubles semifinal in his career at the 2021 French Open partnering with fellow Kazakh Andrey Golubev defeating No. 5 seeded Ivan Dodig/Filip Polášek (second round), No. 11 seeded Wesley Koolhof/Jean-Julien Rojer (third round) and Hugo Nys/Tim Pütz (quarterfinals) en route, his best showing at this Grand Slam. In the semifinal the Kazakh duo defeated the Spanish duo Pablo Andújar/Pedro Martínez who were both making their Grand Slam semifinals doubles debut. They played in the final against the French home favorites Nicolas Mahut/Pierre-Hugues Herbert, but they lost 6−4, 6−7, 4−6. As a result, he entered the top 50 in doubles at World No. 49 on 14 June 2021.

2022: First ATP singles title

Bublik started his 2022 season at the Adelaide International 2. Seeded sixth, he lost in the first round to Australian wildcard Aleksandar Vukic. At the Australian Open, he was defeated in the second round by 17th seed and world No. 20, Gaël Monfils.

In February, Bublik reached his fifth ATP singles final at the Open Sud de France in Montpellier. Seeded sixth, he defeated Tallon Griekspoor, qualifier Pierre-Hugues Herbert, second seed Roberto Bautista Agut, and fifth seed Filip Krajinović en route to the final. In the final, he defeated top seed and world No. 3, Alexander Zverev, to earn his first career win over a top-five player, as well as his first ATP singles title. At the Rotterdam Open, he was eliminated from the tournament in the first round by Andy Murray. Seeded seventh at the Qatar ExxonMobil Open, he lost in the second round to Arthur Rinderknech. In Dubai, he was beaten in the first round by fifth seed and world No. 11, Hubert Hurkacz. Representing Kazakhstan in the Davis Cup tie against Norway, he won both of his matches by beating Viktor Durasovic and world No. 8 Casper Ruud. In the end, Kazakhstan won the tie over Norway 3–1 to reach the Davis Cup Finals. Seeded 31st at the Indian Wells Masters, he beat 2009 finalist and former world No. 1, Andy Murray, in the second round. He lost in the third round to 33rd seed and last year semifinalist, Grigor Dimitrov. Seeded 30th at the Miami Open, he was defeated in the third round by sixth seed, world No. 8, and eventual finalist, Casper Ruud.

Bublik started his clay-court season at the Monte-Carlo Masters. He beat 2014 champion, Stan Wawrinka, in the first round for his first win at this event. He retired during his second-round match against 13th seed and world No. 19, Pablo Carreño Busta, for no obvious reason. Seeded 16th at the Barcelona Open, he was beaten in the second round by Emil Ruusuvuori. Last year quarterfinalist at the Madrid Open, he lost in the first round to Miomir Kecmanović. Due to not defending his quarterfinalist points from last year, Bublik's ranking fell from 33 to 41. In Rome, he was defeated in the first round by lucky loser Marcos Giron. Seeded eighth at the Geneva Open, he lost in the first round to Kamil Majchrzak. At the French Open, he lost his second-round match to 28th seed, Miomir Kecmanović, in four sets.

Bublik started his grass-court season at the BOSS Open in Stuttgart. Seeded seventh, he lost in the second round to eventual finalist, Andy Murray. At the Queen's Club Championships, he was defeated in the second round by seventh seed, world No. 17, and two-time champion, Marin Čilić. In Eastbourne, he beat seventh seed, Frances Tiafoe, in the first round. He was eliminated in the quarterfinals by third seed, world No. 14, 2019 champion, and eventual champion, Taylor Fritz. At Wimbledon, he reached the third round where he lost to 23rd seed and world No. 28, Frances Tiafoe, in four sets.

After Wimbledon, Bublik competed at the Hall of Fame Open. Seeded third, he beat sixth seed, Andy Murray, in the quarterfinals. He then defeated Jason Kubler in the semifinals to reach his sixth ATP singles final, his second ATP singles final of the year, and his second Hall of Fame Open final. He lost in a thrilling final to fourth seed Maxime Cressy.

In August, Bublik played at the National Bank Open. He lost in the first round to Jenson Brooksby. Bublik then missed the Western & Southern Open, and the Winston-Salem Open due to the birth of his son Vasily. Returning to action at the US Open, he was defeated in the second round by 12th seed, world No. 15, and two-time semifinalist, Pablo Carreño Busta.

In October at the first edition of the Firenze Open, he defeated in the first round Cristian Garín for his 100th career match win. He was the second man representing Kazakhstan to record 100 tour-level wins in his career, after Mikhail Kukushkin, who had 172.

2023: First ATP 500 and second ATP 250 titles, top 25

Bublik started his 2023 season by representing Kazakhstan at the first edition of the United Cup. Kazakhstan was in Group B alongside Switzerland and Poland. Against Switzerland, he lost to Stan Wawrinka. Against Poland, he was defeated by Hubert Hurkacz in three sets. In the end, Kazakhstan ended third in Group B. Seeded fifth at the ASB Classic in Auckland, he lost in the first round to David Goffin. At the Australian Open, he pushed 30th seed and world No. 32, Alejandro Davidovich Fokina, to five sets, but he ended up losing his first-round match.

After the Australian Open, Bublik represented Kazakhstan in the Davis Cup tie against Chile. He lost both of his matches to Nicolás Jarry and Cristian Garín. In the end, Chile won the tie over Kazakhstan 3–1. Seeded sixth and defending champion at the Open Sud de France, he was defeated in a dramatic first-round match by Grégoire Barrère. In Rotterdam, he lost in the first round to doubles partner Stan Wawrinka. In doubles, he and Wawrinka upset second seeded team Nikola Mektić/Mate Pavić in the first round. They lost in their quarterfinal match to Belgian qualifiers Sander Gillé/Joran Vliegen. At the Open 13 Provence, he beat fourth seed and world No. 25, Grigor Dimitrov, in the quarterfinals in three sets; he saved two match points in the third set tie-breaker. He lost in the semifinals to top seed and world No. 11, Hubert Hurkacz, who would end up winning the tournament. At the Dubai Championships, he was beaten in the second round by third seed, world No. 7, and eventual champion, Daniil Medvedev. During the week of 6 March, Bublik competed at the BNP Paribas Open. He lost in the first round to qualifier Wu Tung-lin. Seeded fourth at the Arizona Classic, he ousted defending champion, Denis Kudla, in the first round. He reached the quarterfinals where he lost to qualifier Jan-Lennard Struff. In Miami, he was defeated in the first round by J. J. Wolf.

Bublik started his clay-court season at the Monte-Carlo Masters. He fell in the first round to 13th seed and world No. 16, Alexander Zverev, in three sets. This was his first loss to Zverev after having led their Head to Head rivalry 2–0. In Barcelona, he lost in the first round to Emil Ruusuvuori. At the Madrid Open, he beat Daniel Elahi Galán in the first round after playing in the longest tie-break of the season so far. In the second round, he lost to sixth seed and world No. 7, Holger Rune, in three sets, despite having match point at 8–7 in the third set tie-break. Seeded sixth at the Open Aix Provence, he made it to the quarterfinals where he was defeated by French lucky loser Harold Mayot. In Rome, he reached the third round where he lost to world No. 4, Casper Ruud, in three sets. At the Geneva Open, he was eliminated in the first round by Marcos Giron.

In Halle, Bublik kicked off his grass court season with an upset over seventh seed Borna Ćorić, crushing Coric in straight sets. Bublik then emerged victorious in a close-fought hard three set win over Madrid Open finalist Jan-Lennard Struff, to reach the quarterfinals. Bublik, in the quarterfinals, defeated Jannik Sinner by a second set retirement after he had won a riveting first set to reach the semifinals of an ATP 500 for the first time in his career. He then defeated Alexander Zverev and reached the biggest final of his career. There Bublik played against third seed Andrey Rublev, with whom he had an 0–3 head-to-head record. Bublik sealed a thrilling three set victory to close out on the biggest title of his career and become the first Kazakhstani to win an ATP 500 singles title since Andrey Golubev's ATP World Tour 500 series title in 2010, in Hamburg. As a result, Bublik soared 22 spots in the rankings to No. 26, his career highest singles ranking on 26 June 2023. He further reached a new career-high in the top 25 on 31 July 2023.