# 2019 Internazionali di Tennis del Friuli Venezia Giulia – Men's singles

Paolo Lorenzi was the defending champion but lost in the third round to Markus Eriksson.
Christopher O'Connell won the title after defeating Jeremy Jahn 7–5, 6–2 in the final.

## Seeds

All seeds receive a bye into the second round.
* Paolo Lorenzi (third round)
* Andrej Martin (third round)
* Attila Balázs (third round)
* Emil Ruusuvuori (second round)
* Alejandro Tabilo (third round)
* Blaž Kavčič (third round)
* Aleksandar Vukic (second round)
* Gonçalo Oliveira (withdrew)
* Dmitry Popko (second round)
* Nino Serdarušić (second round)
* Gian Marco Moroni (quarterfinals)
* Renzo Olivo (second round)
* Alex Molčan (second round)
* Markus Eriksson (semifinals)
* Francisco Cerúndolo (quarterfinals)
* Marcelo Tomás Barrios Vera (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 14/ITF | Markus Eriksson | 6 | 4 | 6 | | | | | | | | |
| | Andrea Collarini | 3 | 6 | 4 | | | | | | | | |
| | Andrea Collarini | 3 | 6 | 4 | 14/ITF | Markus Eriksson | 1 | 1 | | | | |
| | | | | | | Jeremy Jahn | 6 | 6 | | | | |
| | Jeremy Jahn | 6 | 4 | 7$^7$ | | Jeremy Jahn | 6 | 6 | | | | |
| 11 | Gian Marco Moroni | 2 | 6 | 6$^2$ | | | | | | | | |
| 11 | Gian Marco Moroni | 2 | 6 | 6$^2$ | | | | | | Jeremy Jahn | 5 | 2 |
| | | | | | | | | | ITF | Christopher O'Connell | 7 | 6 |
| ITF | Christopher O'Connell | 6 | 1 | 6 | | | | | | | | | ITF | Christopher O'Connell | 7 | 6 |
| 15/ITF | Francisco Cerúndolo | 1 | 6 | 3 | | | | | | | | |
| 15/ITF | Francisco Cerúndolo | 1 | 6 | 3 | ITF | Christopher O'Connell | 7$^7$ | 6 | | | | |
| | | | | | | Zsombor Piros | 6$^3$ | 2 | | | | |
| | Zsombor Piros | 6 | 6 | | | Zsombor Piros | 6$^3$ | 2 | | | | |
| | Thiago Seyboth Wild | 4 | 4 | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 1 | P Lorenzi | 2 | 7 | 7$^7$ | | | | | | | | | | |
| Q | F Reboul | 2 | 2 | | G Clezar | 6 | 5 | 6$^5$ | | | | | | | | | | |
| | G Clezar | 6 | 6 | | | | | | 1 | P Lorenzi | 4 | 6 | 3 | | | | | |
| | J Berrettini | 4 | 4 | | | | | | 14/ITF | M Eriksson | 6 | 3 | 6 | | | | | |
| WC | E Dalla Valle | 6 | 6 | WC | E Dalla Valle | 6 | 3 | 6$^8$ | | | | | | | | | | |
| | | | | 14/ITF | M Eriksson | 4 | 6 | 7$^{10}$ | | | | | | | | | | |
| | | | | | | | | | | | | | | 14/ITF | M Eriksson | 6 | 4 | 6 |
| | | | | | | | | | | | | | | | A Collarini | 3 | 6 | 4 |
| | | | | 9 | D Popko | 5 | 3 | | | | | | | | | | | |
| WC | G Fonio | 4 | 6$^3$ | Alt | O Luz | 7 | 6 | | | | | | | | | | | |
| Alt | O Luz | 6 | 7$^7$ | | | | | | Alt | O Luz | 5 | 4 | | | | | | |
| WC | G Quinzi | 0 | 2 | | | | | | | A Collarini | 7 | 6 | | | | | | |
| | A Collarini | 6 | 6 | | A Collarini | 6 | 6 | | | | | | | | | | | |
| | | | | 7 | A Vukic | 4 | 4 | | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | E Ruusuvuori | 4 | 4 | | | | | | | | | | | |
| | Jeremy Jahn | 6 | 6 | | | J Jahn | 6 | 6 | | | | | | | | | | | |
| ITF | F Sun | 3 | 2 | | | | | | | | J Jahn | 6 | 6 | | | | | | |
| ITF | F Meligeni Alves | 6$^3$ | 6 | 2 | | | | | | | A Basso | 2 | 4 | | | | | | |
| | A Basso | 7$^7$ | 3 | 6 | | A Basso | 7$^7$ | 3 | 7$^8$ | | | | | | | | | | |
| | | | | | 13 | A Molčan | 6$^5$ | 6 | 6$^6$ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | J Jahn | 6 | 4 | 7$^7$ |
| | | | | | | | | | | | | | | | 11 | GM Moroni | 2 | 6 | 6$^2$ |
| | | | | | 11 | GM Moroni | 6$^6$ | 7$^7$ | 4 | | | | | | | | | | |
| | L Musetti | 6 | 6 | | | L Musetti | 7$^8$ | 6$^5$ | 1$^r$ | | | | | | | | | | |
| | B Bonzi | 1 | 4 | | | | | | | 11 | GM Moroni | 7$^7$ | 2 | 6 | | | | | |
| | A Pellegrino | 6 | 6 | | | | | | | 5 | A Tabilo | 6$^1$ | 6 | 3 | | | | | |
| | S Doumbia | 2 | 4 | | | A Pellegrino | 3 | 7$^{10}$ | 1 | | | | | | | | | | |
| | | | | | 5 | A Tabilo | 6 | 6$^8$ | 6 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | LL | Nicolò Inserra | 2 | 3 | | | | | | | | | | | |
| ITF | C O'Connell | 1 | 6 | 7 | ITF | C O'Connell | 6 | 6 | | | | | | | | | | | |
| | C-h Tseng | 6 | 4 | 5 | | | | | | ITF | C O'Connell | 6 | 6 | | | | | | |
| | T Brkić | 6 | 6 | | | | | | | | T Brkić | 4 | 2 | | | | | | |
| | G Zeppieri | 3 | 3 | | | T Brkić | 7$^7$ | 5 | 6 | | | | | | | | | | |
| | | | | | 12 | R Olivo | 6$^4$ | 7 | 3 | | | | | | | | | | |
| | | | | | | | | | | | | | | | ITF | C O'Connell | 6 | 1 | 6 |
| | | | | | | | | | | | | | | | 15/ITF | F Cerúndolo | 1 | 6 | 3 |
| | | | | | 15/ITF | F Cerúndolo | 5 | 6 | 7$^7$ | | | | | | | | | | |
| | Carlos Boluda-Purkiss | 6$^5$ | 2 | | Q | E Tiurnev | 7 | 4 | 6$^5$ | | | | | | | | | | |
| Q | E Tiurnev | 7$^7$ | 6 | | | | | | | 15/ITF | F Cerúndolo | 3 | 6 | 6 | | | | | |
| | R Bonadio | 1 | 6$^9$ | | | | | | | 3 | A Balázs | 6 | 3 | 2 | | | | | |
| WC | F Arnaboldi | 6 | 7$^{11}$ | | WC | F Arnaboldi | 1 | 3 | | | | | | | | | | | |
| | | | | | 3 | A Balázs | 6 | 6 | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 6 | B Kavčič | 6 | 7$^7$ | | | | | | | | | |
| | F Forti | 6 | 4 | 6 | | F Forti | 3 | 6$^2$ | | | | | | | | | |
| WC | Riccardo Balzerani | 4 | 6 | 2 | | | | | | 6 | B Kavčič | 6 | 3 | 3 | | | |
| | G Granollers | 3 | 1 | | | | | | | | Z Piros | 1 | 6 | 6 | | | |
| | Z Piros | 6 | 6 | | | Z Piros | 6 | 7 | | | | | | | | | |
| | | | | | 10 | N Serdarušić | 3 | 5 | | | | | | | | | |
| | | | | | | | | | | | | | | | Z Piros | 6 | 6 |
| | | | | | | | | | | | | | | | T Seyboth Wild | 4 | 4 |
| | | | | | 16 | MT Barrios Vera | 1 | 7$^7$ | 4 | | | | | | | | |
| | D Gimeno Traver | 6$^5$ | 1 | | | T Seyboth Wild | 6 | 6$^5$ | 6 | | | | | | | | |
| | T Seyboth Wild | 7$^7$ | 6 | | | | | | | | T Seyboth Wild | 6 | 6 | | | | |
| | A González | 6 | 6 | | | | | | | 2 | A Martin | 2 | 2 | | | | |
| | A Pavić | 3 | 2 | | | A González | 2 | 5 | | | | | | | | | |
| | | | | | 2 | A Martin | 6 | 7 | | | | | | | | | |