ATP - Umag 1R complete

First round completed in Umag.

2021 Plava Laguna Croatia Open Umag - an ATP 250 tournament, on Clay, in Umag, Croatia, 19-25 July 2021.

Event not held last year due to COVID-19

Defending champion (2019):

Dusan Lajovic (4) who defeated qualifier Attila Balazs 7-5 7-5

Salvatore Caruso withdrew after the main draw was published, and was replaced by lucky loser Renzo Olivo 

First round results:

- Wildcard Duje Ajdukovic defeated qualifier Andrea Collarini 6-3 6-2

- Andrej Martin defeated lucky loser Renzo Olivo 1-6 6-2 7-6(1)

- Carlos Alcaraz (7) defeated Lucas Pouille 3-6 6-2 6-2

- Marco Cecchinato defeated Aljaz Bedene (5) 6-1 6-4

- Damir Dzumhur defeated qualifier Filip Horansky 6-4 6-3

- Qualifier Alessandro Giannessi defeated Jiri Vesely 7-6(4) 7-5

- Gianluca Mager (8) defeated Pedro Martinez 0-6 6-3 6-3

- Qualifier Daniel Altmaier defeated Corentin Moutet 5-7 6-1 (retired)

- Bernabe Zapata Miralles defeated Pablo Cuevas 4-6 6-2 6-4