Overview
- Simon Sohm put Fiorentina ahead after a Danny da Costa turnover in the 16th minute.
- Substitute Benedict Hollerbach equalized in the 68th minute before Jae-sung Lee secured the winner deep into stoppage time.
- Fiorentina played under interim coach Daniele Galloppa after Stefano Pioli was dismissed on Tuesday.
- Both teams continue to struggle domestically, with Mainz 17th in the Bundesliga and Fiorentina bottom of Serie A.
- A Moise Kean goal in the 81st minute was ruled offside, while Roberto Piccoli missed multiple chances as Robin Zentner and Kacper Potulski made vital interventions.