Jan-Lennard Struff (born 25 April 1990) is a German professional tennis player.
He reached his career-high ATP singles ranking of world No. 21 on 19 June 2023.
2010
In Barcelona, he beat 10th seed and world No. 22, David Goffin, in the second round.
He upset fifth seed and world No. 8, Stefanos Tsitsipas, in the third round for his second Top 10 win of the season.
He was defeated in his quarterfinal match by top seed, world No. 2, and eleven-time champion, Rafael Nadal.
At the BMW Open in Munich, he lost in the first round to Brazilian qualifier Thiago Monteiro.
In Madrid, he was defeated in the second round by ninth seed Marin Čilić.
At the Italian Open, he upset ninth seed and world No. 10, Marin Čilić, in the second round.
He was eliminated in the third round by world No. 6 Kei Nishikori.
2013
He was eliminated from the tournament in the fourth round by 13th seed and world No. 14, Milos Raonic.
In Miami, he lost in the first round to American qualifier Reilly Opelka.
Struff started his clay-court season at the Monte-Carlo Masters.
2015
He upset 15th seed and world No. 20, Denis Shapovalov, in the first round.
He lost in the second round to Grigor Dimitrov.
2018
In doubles, he achieved a career-high ranking of world No. 21 on 22 October 2018.
He has reached three ATP Tour singles finals, including at the 2023 Madrid Masters, and won four ATP Tour doubles titles.
He is the current German No. 2.
Struff advanced to his first semifinals on the ATP Tour in Marseille, Munich and Metz.
He entered the top 50 in the ATP rankings for the first time in his career and finished the year in the top 100 also for the first time at World No. 59.
Struff made his Davis Cup debut for Germany against France in the first round.
He lost the first rubber to Gilles Simon with 8–10 in the fifth set, and his team lost the tie with 2–3.
Struff reached the third round of the Paris Masters as a qualifier, his best showing at the Masters 1000 level thus far, after beating world No. 3 Stan Wawrinka, saving a match point.
Struff reached the semifinals of both Winston-Salem and St. Petersburg.
Struff got to the semifinals in the Australian Open men's doubles in partnership with Ben McLachlan, including a win over the No. 1 seeds Łukasz Kubot and Marcelo Melo.
At the 2018 Wimbledon Championships, he reached the quarterfinals in doubles, also partnering with McLachlan, where they lost to the wildcard pair of Frederik Nielsen and Joe Salisbury.
In Tokyo, Struff defeated Marin Čilić and had a match point in the second set of his quarterfinal encounter against Denis Shapovalov.
At the same tournament, he won the first title of his career in doubles, partnering again with McLachlan.
2019
Struff started his 2019 season at the Brisbane International.
He lost in the first round to Jérémy Chardy.
At the ASB Classic in Auckland, he upset fourth seed and world No. 24, Pablo Carreño Busta, in the quarterfinals.
He was defeated in the semifinals by British wildcard Cameron Norrie.
However, in doubles, he and his partner, Ben McLachlan, won the title, beating Raven Klaasen and Michael Venus in the final.
Ranked 51 at the Australian Open, he lost in the first round to Australian Matthew Ebden in four sets.
In February, Struff competed at the Sofia Open.
He lost in the second round to second seed and world No. 12, Stefanos Tsitsipas.
In Rotterdam, he fell in the first round of qualifying to Dutch wildcard Ryan Nijboer.
At the Dubai Championships, he stunned seventh seed and world No. 14, Milos Raonic, in the first round.
He was defeated in the second round by Márton Fucsovics.
In doubles, he and Ben McLachlan reached the final where they lost to Joe Salisbury and Rajeev Ram.
At the Indian Wells Masters, he upset world No. 3 and compatriot, Alexander Zverev, in the third round.
