| Singles | |
|---|---|
| 2018 Internazionali di Tennis del Friuli Venezia Giulia | |
| Champion |  Paolo Lorenzi |
| Runner-up |  Máté Valkusz |
| Score | 6–3, 3–6, 6–4 |
Elias Ymer was the defending champion but chose not to defend his title.
Paolo Lorenzi won the title after defeating Máté Valkusz 6–3, 3–6, 6–4 in the final.
Paolo Lorenzi (champion)
Facundo Bagnis (quarterfinals)
Andrej Martin (second round)
Nino Serdarušić (first round)
Tommy Robredo (quarterfinals)
Zdeněk Kolář (quarterfinals)
Guilherme Clezar (semifinals) Viktor Galović (withdrew)| Semifinals | Final | ||||||||||||
| 1 | Paolo Lorenzi | 711 | 7 | ||||||||||
 João Domingues | 69 | 5 | |||||||||||
| 1 | Paolo Lorenzi | 6 | 3 | 6 | |||||||||
| Q | Máté Valkusz | 3 | 6 | 4 | |||||||||
| Q | Máté Valkusz | 6 | 6 | ||||||||||
| 7 | Guilherme Clezar | 2 | 4 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | P Lorenzi | 7 | 77 | ||||||||||||||||||||||||
 S Diez | 5 | 65 | 1 | P Lorenzi | 6 | 6 | |||||||||||||||||||||
| Q | R Bonadio | 6 | 2 | 1 | A Bega | 4 | 3 | ||||||||||||||||||||
| A Bega | 2 | 6 | 6 | 1 | P Lorenzi | 6 | 6 | ||||||||||||||||||||
| WC | E Dalla Valle | 6 | 7 | 5 | T Robredo | 3 | 3 | ||||||||||||||||||||
 M Zekić | 2 | 5 | WC | E Dalla Valle | 3 | 0r | |||||||||||||||||||||
| L Giustino | 63 | 1 | 5 | T Robredo | 6 | 0 | |||||||||||||||||||||
| 5 | T Robredo | 77 | 6 | 1 | P Lorenzi | 711 | 7 | ||||||||||||||||||||
| 3 | A Martin | 66 | 7 | 6 | J Domingues | 69 | 5 | ||||||||||||||||||||
 A Šetkić | 78 | 5 | 3 | 3 | A Martin | 4 | 6 | 1 | |||||||||||||||||||
| H Casanova | 0 | 2 | J Domingues | 6 | 3 | 6 | |||||||||||||||||||||
| J Domingues | 6 | 6 | J Domingues | 6 | 6 | ||||||||||||||||||||||
| A Basso | 77 | 7 | Q |  E Couacaud | 2 | 1 | |||||||||||||||||||||
| Alt | D Muñoz de la Nava | 61 | 5 | A Basso | 6 | 66 | 3 | ||||||||||||||||||||
| G Mager | 4 | 1 | Q | E Couacaud | 4 | 78 | 6 | ||||||||||||||||||||
| Q | E Couacaud | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | Z Kolář | 6 | 6 | ||||||||||||||||||||||||
| C Gómez-Herrera | 3 | 4 | 6 | Z Kolář | 6 | 6 | |||||||||||||||||||||
| Q | D Dutra da Silva | 5 | 6 | 0r | WC | F Forti | 1 | 4 | |||||||||||||||||||
| WC | F Forti | 7 | 1 | 5 | 6 | Z Kolář | 0 | 0 | |||||||||||||||||||
| G Oliveira | 4 | 4 | Q | M Valkusz | 6 | 6 | |||||||||||||||||||||
| Q | M Valkusz | 6 | 6 | Q | M Valkusz | 6 | 6 | ||||||||||||||||||||
| LL |  M Eriksson | 6 | 6 | LL | M Eriksson | 0 | 1 | ||||||||||||||||||||
| 4 | N Serdarušić | 3 | 1 | Q | M Valkusz | 6 | 6 | ||||||||||||||||||||
| 7 | G Clezar | 6 | 7 | 7 | G Clezar | 2 | 4 | ||||||||||||||||||||
| WC | Riccardo Balzerani | 2 | 5 | 7 | G Clezar | 6 | 6 | ||||||||||||||||||||
| P Cachin | 3 | 6 | 6 | P Cachin | 2 | 4 | |||||||||||||||||||||
| WC | J Berrettini | 6 | 1 | 2 | 7 | G Clezar | 6 | 4 | 6 | ||||||||||||||||||
| A Pellegrino | 67 | 6 | 6 | 2 | F Bagnis | 4 | 6 | 2 | |||||||||||||||||||
 L Grigelis | 79 | 2 | 4 | A Pellegrino | 5 | 5 | |||||||||||||||||||||
| M Viola | 0 | 2 | 2 | F Bagnis | 7 | 7 | |||||||||||||||||||||
| 2 | F Bagnis | 6 | 6 | ||||||||||||||||||||||||
Brian Dabul chose to not defend his 2008 title.
Santiago Giraldo defeated Paolo Lorenzi in the final 6–2, 6–7(3), 6–2.
Andrés Molteni was the defending champion, but he lost in the first round.
Guido Pella won the title, defeating Paolo Lorenzi 1–6, 7–5, 6–3 in the final.
Carlos Berlocq was the defending champion but decided not to participate.
Andrey Kuznetsov won the title, after Paolo Lorenzi retired after trailing 3–6, 0–2 in the final.
Defending champion Novak Djokovic defeated Juan Martín del Potro in the final, 6–1, 3–6, 7–6(7–3) to win the singles tennis title at the 2013 Shanghai Masters.
Paolo Lorenzi and Potito Starace were the defending champions, but decided not to participate together. Lorenzi played alongside Filippo Volandri, but lost in the quarterfinals to Oliver Marach and Florin Mergea. Starace teamed up with Daniele Bracciali, but lost in the quarterfinals to Marcel Granollers and Marc López.
Marach and Mergea won the title, defeating Juan Sebastián Cabal and Robert Farah in the final, 6–3, 6–4.
Alessio di Mauro was the defending champion, but lost in the quarterfinals to Víctor Estrella Burgos.
Nicolas Mahut was the defending champion, but lost in the quarterfinals to Roberto Bautista Agut.
Bautista Agut went on to win the title, defeating Benjamin Becker in the final, 2–6, 7–6(7–2), 6–4.
Paolo Lorenzi was the defending champion, but lost in the semifinals.
Austin Krajicek was the defending champion, but chose to compete in the Japan Open instead of defending his title.
Daniel Gimeno Traver is the defending champion, but chose not to defend his title. Gerald Melzer won the title defeating Paolo Lorenzi in the final 6–3, 6–1.
Paolo Lorenzi won the title, defeating Nikoloz Basilashvili in the final, 6–3, 6–4. At the age of 34 years and seven months, Lorenzi became the oldest first-time champion in ATP history.
Filip Krajinović was the defending champion but lost in the quarterfinals to Paolo Lorenzi.
Stan Wawrinka was the defending champion and successfully defended his title, defeating Mischa Zverev in the final, 4–6, 6–3, 6–3.
Paolo Lorenzi was the defending champion and successfully defended his title, defeating Alessandro Giannessi 6–4, 6–2 in the final.
Fabio Fognini was the defending champion, but lost in the quarterfinals to lucky loser Andrey Rublev.
Federico Delbonis was the defending champion but chose not to defend his title.
Hugo Dellien was the defending champion but chose not to defend his title.
Paolo Lorenzi was the defending champion but lost in the quarterfinals to Aslan Karatsev.
Roberto Carballés Baena was the defending champion but chose not to defend his title.
Reilly Opelka was the defending champion, but lost to Jason Jung in the quarterfinals.