MEDIA & DIGITAL

Media work, digital projects and creative formats.

Alongside professional tennis, I work in a range of media and digital fields. These include live commentary and TV work, web design and development, strategic communication, editorial formats and selected creative projects.

Jonas Pelle Hartenstein in a media and creative context

TV & COMMENTARY

Live commentary and expert analysis

As an active pro player, I combine my own competitive experience with media work. At Sporteurope.tv I have worked as a commentator and expert at the US Open since 2024.

In 2026, I appeared in front of the camera for the first time. At the Mixed Event of the US Open Fan Week, I was live in the studio in Krefeld as an expert.

Jonas Pelle Hartenstein as a TV expert at Sporteurope.tv
  • Live commentary On-air commentary at the US Open for Sporteurope.tv.
  • Expert analysis Context and analysis from the perspective of an active pro player.
  • German and English Commentary and expert work in both languages.
  • Editorial formats On-camera appearances, including live from the studio in Krefeld.
2024 US Open 2024, Sporteurope.tv First appearance as commentator and expert.
2025 US Open 2025, Sporteurope.tv Back on the commentary team, together with Ulf Kahmke.
2026 US Open 2026, Sporteurope.tv Back as a commentator and, for the first time, on camera at the Fan Week Mixed Event, live from the studio in Krefeld.

HIGHLIGHT MATCH

Tsitsipas vs. Fils
Shelton vs. Shapovalov
Eala vs. Jovic
Zverev vs. Tabilo
Sport Bild, 2025 Mentioned as an expert at Sporteurope.tv in the US Open coverage.
Sporteurope.tv Live commentary of the US Open 2024, 2025 and 2026, on-air analyses and expert assessments.
Ulf Kahmke, Sportworx TV Productions “Jonas Hartenstein once again delivered completely: as an expert with strong, precise analysis and great background insights from the pro tour, as a co-commentator likeable, approachable and authentic, and as a team player, an important part of a great team at Sporteurope.tv.”

WEB DESIGN & DEVELOPMENT

Websites with a clear idea behind them.

I build custom websites that present companies, brands and offerings in a clear, modern and high-quality way.

For me, a good result does not start with design, but with understanding the project. Which content is truly relevant? How does it need to be structured? And how does that turn into an appearance that is understandable, consistent and easy to use?

From the initial analysis through structure and design to development and launch, I support the entire process.

01 Concept and structure I analyze existing content, requirements and potential and develop a sensible site structure from them before moving on to design.
02 Design and brand identity Based on the structure, the visual direction emerges. I follow the existing corporate identity or develop it further where needed.
03 Development The concept becomes a working, responsive website for desktop and mobile devices, complemented by subtle animations and interactions where they make sense.
04 Launch and support After final approval, the website is published. On request, I also take care of technical maintenance afterwards.
Website of the Tennis Association Berlin-Brandenburg
Association

Tennis Association Berlin-Brandenburg

Complex content, clearly structured.

The TVBB website serves numerous different target groups and brings together a large amount of information, offerings and services. At the start of the project, I therefore analyzed the existing site and rethought the entire page structure. The goal was to make important information accessible faster while creating a modern and consistent digital presence for the association. This resulted in a clear information architecture with understandable topic areas, direct access to important services and a design that runs consistently throughout the entire website.

Thanks to my own background in competitive tennis, I was also able to bring in many requirements and user perspectives from first-hand experience.

Concept · Information architecture · Web design · Responsive implementation · Technical development

Visit website
Screenshot of the Close Call Clothing website
Brand

Close Call Clothing

E-commerce meets brand world.

Close Call Clothing was meant to be more than a classic online shop. The website had to sell products and at the same time convey the personality of the brand. Tennis, streetwear, storytelling and e-commerce therefore had to be combined into one unified digital presence. From the visual direction to the structure of the shop, the website was consistently conceived as part of the brand. Products, images, content and brand story interlock and create a presence that clearly stands apart from a classic sports shop.

Concept · Corporate identity · Web design · E-commerce · Responsive implementation · Technical development

Visit website

COMMUNICATION

Communication, identity and community.

In my role at TC 1899 Blau Weiss Berlin, I was responsible for strategic communication around the tennis operations.

This included building and managing the official Instagram channel, developing a unified corporate identity and independently designing all graphics in Adobe Photoshop.

In addition, I conceived and ran a Pro-Am event where members could play alongside the club’s pros. I adopted the concept from my college tennis days in the US and reinterpreted it.

I was also responsible for looking after players and parents as well as acquiring sponsors.

Social media Building the official Instagram channel with results, announcements and club communication.
CI & Gestaltung Independent development of a unified visual style and creation of all graphics in Adobe Photoshop.
Event & Sponsoring Concept for a Pro-Am format, looking after members and active sponsor acquisition.

EDITORIAL

Spiel, Satz, Wirklichkeit

With “Spiel, Satz, Wirklichkeit” I write a column for Matchball Magazin, in which I look at tennis not only from a sporting perspective but also from a personal and societal one. The series is planned for four issues per year and can be extended continuously.

Issue I Matchball Magazin

Warum ich Tennis trotzdem liebe

Opening of the column on the ambivalence of the sport, between fascination, frustration and lasting passion.

Spiel, Satz, Wirklichkeit, Issue 1, page 1
Spiel, Satz, Wirklichkeit, Issue 1, page 2
Read article (in German)
Issue II Matchball Magazin

Zwischen Hunger und Höchstleistung

On nutrition on the tennis tour and why it is crucial for performance, recovery and health.

Spiel, Satz, Wirklichkeit, Issue 2, page 1
Spiel, Satz, Wirklichkeit, Issue 2, page 2
Read article (in German)
Issue III Matchball Magazin

Wandelnde Wettscheine: Sportwetten, wenn dein Investment Doppelfehler serviert

On sports betting, hate messages and the dark side of a business in which players become a financial product.

Spiel, Satz, Wirklichkeit, Issue 3, page 1
Spiel, Satz, Wirklichkeit, Issue 3, page 2
Read article (in German)
Issue IV Matchball Magazin

Next issue coming soon

DJ & MUSIKPRODUZENT

Code Violation

I started building my first beats at around 16. Hip-hop was the entry point, but quite quickly electronic music completely captivated me.

The deeper I got into this world, the more it became a place where I could switch off, experiment and lose myself. In summer 2024 I simply started DJing. The craft fascinated me right away. Since then I have been playing for myself and for others.

My artist name Code Violation comes from tennis. There, a code violation means crossing a line. For me, that describes pretty precisely what music does to me: it breaks up routines, questions rules and allows me to create my own space.

Jonas Pelle Hartenstein as Code Violation

SELECTED SETS & TRACKS

MixcloudHave u ever hit an ace on break point down?

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MixcloudBelieve me, I had to give them some mainstream stuff ;​)

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SoundCloudCode Violation - Shawties (Unreleased/Demo)

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MixcloudThis set is as long as Djokovic’s 2018 US Open final win over del Potro.

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VISUAL WORK

Selected visual projects.

In addition, I also work in visual and brand-related contexts in front of the camera. This area is not a main focus for me, but a creative field that sensibly complements my profile.

CONTACT

Interested in working together?

Do you have a project, an idea, or would you like to talk about media work, communication or digital projects? Feel free to write to me directly.