Sauer grew up with his parents in Bratislava. He has an older brother called Mário who is also a footballer, both attended the Secondary Sports School in Žilina.[2]
Sauer joined Feyenoord initially on loan from MŠK Žilina in 2022, but in April 2023 signed a three-year professional contract with the Dutch club.[5][6] On 20 August 2023, Sauer made his debut for the club in an away match against Sparta Rotterdam by coming in at half-time, scoring the 2–2 in the added time to secure a point for the club.[7]
On 12 August 2024, Sauer moved on a season-long loan to NAC Breda.[8]
On 5 October 2023, at the age of only 17, coach Francesco Calzona called him to the Slovak senior national team.[10] On 26 March 2024, Sauer became the youngest ever player to play for the national team after coming on as a substitute in a friendly against Norway.[11]
He was included in the Slovakia squad for the UEFA Euro 2024 in Germany in June 2024.[12] He made his tournament debut 21 June, becoming the youngest ever Slovakian player at a final tournament.[13]
Career statistics
As of match played 19 May 2024
Appearances and goals by club, season and competition