Jan-Lennard Struff is making his third appearance at ATP Cup.

Germany's Jan-Lennard Struff will make his third appearance at ATP Cup.

Jan-Lennard Struff photographed by Radka Leitmeritz at the NOVENTI OPEN in Halle.

Jan-Lennard Struff upsets top seed Daniil Medvedev in Halle on Tuesday.

Jan-Lennard Struff records the ninth Top 10 win of his career on Tuesday over Andrey Rublev at Roland Garros.

Jan-Lennard Struff is locked in a fifth set with Andrey Rublev on Tuesday at Roland Garros.

Seventh seed Jan-Lennard Struff knocks out qualifier Ilya Ivashka on Saturday for a place in the Munich final.

Jan-Lennard Struff reaches his first ATP Tour final on Saturday after victory over Ilya Ivashka in Munich.

Jan-Lennard Struff is through to his second BMW Open semi-final in Munich.

Jan-Lennard Struff owns a 10-6 record at the BMW Open.

Jan-Lennard Struff wins 81 per cent of his first-serve points to defeat Andrej Martin on Tuesday in Munich.

Fifth seed Jan-Lennard Struff beats qualifier Liam Broady on Wednesday for a place in the Cagliari quarter-finals.

Jan-Lennard Struff saved five of the six break points he faced against Ricardas Berankis at the Miami Open presented by Itau.

Team Germany celebrates clinching the decisive doubles rubber on Friday to edge defending champion Serbia at the ATP Cup.

After beating Alex de Minaur and Denis Shapovalov in his first two matches, Jan-Lennard Struff upsets David Goffin at the Western & Southern Open.

Jan-Lennard Struff is through to the Western & Southern Open third round for the second straight year.

Jan-Lennard Struff claims his first victory in three ATP Head2Head matches against Alex de Minaur.

Jan-Lennard Struff and Henri Kontinen reach the Rotterdam semi-finals on Friday.

Jan-Lennard Struff moves to 1-1 on the young season with a win on Sunday night in Brisbane.

Jan-Lennard Struff beats defending champion Karen Khachanov on Tuesday in Paris.

Robert Lindstedt and Jan-Lennard Struff defeat defending champions Nicolas Mahut and Edouard Roger-Vasselin to win the Moselle Open on Sunday.

Robert Lindstedt and Jan-Lennard Struff are through to their first ATP Tour doubles final as a team in Metz.

Jan-Lennard Struff beats Stefanos Tsitsipas on Wednesday to reach the third round of the Western & Southern Open in Cincinnati.

Jan-Lennard Struff struck 80 miles per hour groundstroke winners and 16 aces to beat Stefanos Tsitsipas on Wednesday in Cincinnati.

Jan-Lennard Struff celebrates reaching the Stuttgart semi-finals after beating Lucas Pouille on Friday.