Humbert already played tennis successfully on the ITF Junior Tour. In the individual he had a record of 65:34 until the end of his junior career and at the beginning of 2016 he achieved his best place in the world rankings of juniors with rank 18. At Junior Grand Slams tournaments , however, he could never reach more than the round of 16 in singles and doubles.
Beginnings as a tennis professional (2015-2017)
In 2015, Humbert played for the first time with the professionals on the third-rate ITF Future Tour and reached his first individual final there, which he lost to Jan Choinski . Thus, at the end of the year, he was placed in the world rankings for the first time in 1015 . In 2016 he played several tournaments for the first time, but could not reach a final and thus make no progress in the ranking. 2017 went much better for the French. He reached two finals in futures and won his first title. He also reached the quarter-finals at his premiere on the ATP Challenger Tour in Brest , where he lost to Marius Copil . In the round of 16, he defeated Italian Matteo Berrettini, who was ranked 123rd, in two sets. A week later at the Masters in Paris , Humbert even won Thomas Fabbiano (73rd place) against a player in the Top 100, but still failed to qualify for the ATP World Tour event . At the end of the year he was ranked 374th in the world.
Three Challenger titles and entry into the Top 100 (from 2018)
In 2018, Humbert rose again. By mid-July of that year he had won three futures and had improved by over 100 places in the ranking. He also got a wildcard for the double competition at the French Open with his compatriot Antoine Hoang , where they lost at the beginning. In Gatineau his breakthrough began at Challenger level and a series of very good results. He played his way up to the final, where he was defeated by Bradley Klahn in two sets. In the following weeks he also reached the final in Granby (loss to Peter Polansky ) and finally won his first title in Segovia , his third final in a row, against Adrián Menéndez . In qualifying for the US Open , Humbert won all three games and was in the main draw of a Grand Slam tournament for the first time . After beating Collin Altamirano in three sets, he also stood up to Stan Wawrinka well in the second round , but ultimately lost to him in four sets. A week later, Humbert reached the final again in Cassis . Despite losing to Enzo Couacaud , he was in the top 100 with 104th place. This he succeeded after his second title win on the Challenger Tour in Ortisei in Val Gardena by finishing 99th. At the last Challenger of the season in Andria , he finally won his third title and finished the year in 84th place.