Holger Rune is experimenting with some big changes in the latter stages of the 2025 season.

Rune was left annoyed at the US Open, before he went on to lose in the second round to Jan-Lennard Struff.

This has continued a mixed season for the Dane, with Rune winning the Barcelona Open earlier this year, but he has failed to reach the quarterfinals of any Grand Slam.

As Rune now looks to return to form, something different has been spotted about him ahead of Denmark’s upcoming Davis Cup tie.

Holger Rune of Denmark reacts against Botic van De Zandschulp of the Netherlands during their Men's Singles First Round match on Day Two of the 2025 US Open at USTA Billie Jean King National Tennis Center.Photo by Al Bello/Getty ImagesHolger Rune noticed practicing with a different racket ahead of Davis Cup tie

Rune will be the number one player for Denmark when they take on Spain in their second Davis Cup qualifier in Marbella.

When practicing ahead of the tie in Malaga, something different was noticed about the world number 11.

Rune usually plays with the Babolat Pure Aero 98 racket, which is also used by Carlos Alcaraz, but it appears that he is testing something new out.

While it cannot be confirmed exactly what the new racket is, fans have speculated that Rune may be thinking about a switch to Wilson instead.

It is unclear as to whether Rune will be using a different racket during his matches during Denmark’s upcoming tie, as he looks to help his country reach the Davis Cup Finals for the first time since the format change.

Holger Rune’s career record at the Davis Cup

This will be Rune’s seventh Davis Cup tie for Denmark, and he has a very impressive record when representing his nation, including two crucial wins earlier this year after knocking out Serbia.

Rune has only lost three of his 10 matches in singles, and he is unbeaten in doubles competition for his nation.

However, this will be the biggest tie of Rune’s Davis Cup career, as they take on six-time champions Spain for a place in the Finals in Bologna.

Holger Rune at the Davis Cup Ties Played 6 Singles Win-loss Record 7-3 (70%) Doubles Win-loss Record 2-0 (100%) Overall Win-loss Record 9-3 (75%)

Although Spain appear to be a strong opposition, their team is not as strong as before after Carlos Alcaraz withdrew from the Davis Cup following his US Open victory.

Alcaraz is not the only big name withdrawal for Spain, who have lost another Grand Slam champion and left a potential opportunity for Denmark.

The Davis Cup tie between Denmark and Spain will take place in Marbella between September 13-14.