Kozerki Open ATP Challenger becomes Mazovia Open ATP Challenger
The international tennis tournament held in Kozerki near Grodzisk Mazowiecki, previously known as the Kozerki Open ATP Challenger, will operate under a new name starting from the 2026 season – Mazovia Open ATP Challenger. This change is a direct result of the Mazovian Voivodeship becoming the tournament’s title sponsor.
New patronage, new name
The Mazovian Voivodeship, a region with a rich sporting tradition and strong support for both national and international events, has decided to become the title sponsor of the tournament played on the courts in Kozerki.
Renaming the event to Mazovia Open ATP Challenger highlights its connection to the region and its status as one of the most important tennis events in Poland. It also confirms the growing significance of Mazovia on the European sports map.
Continuing tradition and new opportunities
The tournament in Kozerki has been an important fixture in the Polish tennis calendar for years, enabling high-level competition for players from around the world. Thanks to the support of the Mazovian Voivodeship, organizers will be able to further develop the infrastructure, improve conditions for participants, and enhance the event’s appeal for spectators.
The name change does not mean abandoning existing values and traditions. Kozerki remains the host of the event, and the location will continue to be a key spot on Poland’s tennis map.
Summary
Changing the tournament’s name from Kozerki Open ATP Challenger to Mazovia Open ATP Challenger is an important step in the development of this prestigious event. The patronage of the Mazovian Voivodeship opens up new opportunities for organizers, players, and the entire tennis community in Poland. The tournament in Kozerki, under its new banner, remains one of the region’s key sporting events, emphasizing Mazovia’s growing role on the international stage.



