Substitute Jae-Sung Lee scored deep into added time as Mainz came from behind to beat Fiorentina 2-1, extending their winning streak to three matches in this season's UEFA Conference League.
After two back-to-back 1-0 wins over Omonia Nicosia and Zrinjski Mostar, Mainz started well but conceded first. Danny Costa's poor pass was intercepted, leading to a precise finish by Simon Sohm from the edge of the box.
Goalkeeper Robin Zentner denied Roberto Piccoli a second goal shortly after, and Kacper Potulski blocked a critical chance just before half-time.
Early in the second half, Piccoli missed a clear chance, allowing Mainz to respond with a swift equalizer. Hollerbach, who came on as a substitute, calmly completed a well-executed team move less than three minutes after entering.
Fiorentina nearly restored their lead when Moise Kean headed over from close range, but Mainz held on and clinched victory thanks to Lee's dramatic header from Sano's cross in the fifth minute of added time.
Mainz will face Romania's Universitatea Craiova in their next European match on 27 November.
"Lady Luck was clearly shining on the home side, who snatched all three points when Lee headed in fellow sub Kaishu Sano's cross in the fifth minute of added time."
Author's summary: Mainz's late goal sealed an impressive third straight UEFA Conference League win, showing resilience and fortune against Fiorentina.