OP Collaterale CR Lazio 2026
27 players participated in this 9-round tournament, held from 22 May 2026 to 24 May 2026 in Roma, Italy. 3 federations represented. Top 10 Elo average was 1676, and top seed was Nicola Gabriele Constantin (🇮🇹 ITA, 1797).
Roberto Pejani (🇮🇹 ITA, 0) won with 8.0/9, ahead of Samuele Gabrieli (7.0) and Andres Junior Domingo Inca Leon (6.0). Pejani won solo starting round 4.
The biggest upset came in round 9: Lorenzo Boncompagni Del Valle (1423) beat Nicola Gabriele Constantin (1797), a +374-point gap.
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How it unfolded
Top 6 · 9 roundsRoberto Pejani led from R4; +1.0-point edge over the runner-up.
Roberto Pejani never relinquished the lead after R4; final gap +1.0 over the runner-up.
Roberto Pejani beat Samuele Gabrieli (White).
Roberto Pejani 7 wins (R1–R7)Samuele Gabrieli 3 wins (R6–R8)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Roberto Pejani | * | 1 | 1 | — |
| 2Samuele Gabrieli | 0 | * | 1 | — |
| 3Andres Junior Domingo Inca Leon | 0 | 0 | * | — |
| 4Alessandro Fiorelli | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Pejani, Roberto | 0 | ITA | +16N | +17B | +2B | +14N | +3B | +8N | +5B | −6N | +7B | 8.0 | 43.5 | 47.5 | 41.50 | 1794 | 0.0 |
| 2 | Gabrieli, Samuele | 1675 | ITA | +19N | +18B | −1N | +13B | =14B | +9N | +3B | +8N | =6B | 7.0 | 42.0 | 45.0 | 32.00 | 1882 | +60.0 |
| 3 | Inca Leon, Andres Junior Domingo | 0 | PER | +13N | =11B | +7N | +20B | −1N | +14B | −2N | =5N | +8B | 6.0 | 44.5 | 47.0 | 26.75 | 1754 | 0.0 |
| 4 | Fiorelli, Alessandro | 1595 | ITA | +9N | −14B | +21N | +7B | =5B | =6N | −8B | +10B | +11N | 6.0 | 41.0 | 43.5 | 28.50 | 1717 | +23.2 |
| 5 | Pizzala, Luca | 1773 | ITA | −24N | +19B | +18N | +11B | =4N | +15B | −1N | =3B | +9N | 6.0 | 40.0 | 42.0 | 26.00 | 1703 | -13.2 |
| 6 | Morgante, Domenico | 1637 | ITA | =22N | +15B | −11N | +23B | +20N | =4B | =13N | +1B | =2N | 6.0 | 39.0 | 41.0 | 26.50 | 1626 | -1.4 |
| 7 | Leotta, Salvatore | 1637 | ITA | =20B | +12N | −3B | −4N | +26B | +23N | +14N | +11B | −1N | 5.5 | 37.5 | 38.5 | 17.25 | 1873 | +58.8 |
| 8 | Ongtioco, Ernesto | 1639 | PHI | +26N | +24B | −14N | +9B | +11N | −1B | +4N | −2B | −3N | 5.0 | 42.5 | 43.5 | 18.50 | 1730 | +25.2 |
| 9 | Leonardi, Andrea | 0 | ITA | −4B | +10N | +12B | −8N | +24B | −2B | +19N | +15N | −5B | 5.0 | 40.5 | 42.5 | 18.50 | 1579 | 0.0 |
| 10 | Proverbio, Michele | 1476 | ITA | −11N | −9B | +19N | −18B | +27N | +17B | +23B | −4N | +16B | 5.0 | 32.0 | 33.0 | 14.00 | 1624 | +56.0 |
| 11 | Rabiti, Roberto | 1708 | ITA | +10B | =3N | +6B | −5N | −8B | +20N | +15B | −7N | −4B | 4.5 | 43.5 | 46.0 | 20.50 | 1501 | -33.0 |
| 12 | Pipitone, Filippo Massimo | 1539 | ITA | =15N | −7B | −9N | +16B | −23N | +26B | +20B | −19N | +18B | 4.5 | 29.5 | 30.5 | 13.00 | 1464 | -10.4 |
| 13 | Ferrari Bellisario, Filippo | 1628 | ITA | −3B | +27N | +24B | −2N | +25B | +18N | =6B | F | F | 4.5 | 27.5 | 27.5 | 11.50 | 1684 | +6.0 |
| 14 | Constantin, Nicola Gabriele | 1797 | ITA | +23B | +4N | +8B | −1B | =2N | −3N | −7B | =18N | −19B | 4.0 | 44.0 | 46.0 | 18.25 | 1625 | -56.0 |
| 15 | Romaniello, Donatello | 0 | ITA | =12B | −6N | +16B | +25N | +17B | −5N | −11N | −9B | =22N | 4.0 | 36.5 | 38.5 | 13.50 | 1592 | 0.0 |
| 16 | Abuhamdieh, Nando | 1566 | ITA | −1B | F | −15N | −12N | +22B | +21B | +17N | +25B | −10N | 4.0 | 32.5 | 32.5 | 11.00 | 1436 | -10.4 |
| 17 | Fiengo, Lorenzo | 1668 | ITA | +27B | −1N | F | +21B | −15N | −10N | −16B | +23N | +26B | 4.0 | 27.5 | 27.5 | 6.50 | 1397 | -43.2 |
| 18 | Scafe`, Stefano | 1530 | ITA | +21B | −2N | −5B | +10N | F | −13B | +25N | =14B | −12N | 3.5 | 35.5 | 35.5 | 11.50 | 1455 | -12.6 |
| 19 | Boncompagni Del Valle, Lorenzo | 1423 | ITA | −2B | −5N | −10B | F | +21N | F | −9B | +12B | +14N | 3.0 | 34.0 | 34.0 | 11.00 | 1580 | +33.2 |
| 20 | Di Marzio, Carlo | 0 | ITA | =7N | +22B | F | −3N | −6B | −11B | −12N | −21N | +23B | 2.5 | 33.5 | 33.5 | 7.25 | 1460 | 0.0 |
| 21 | Vaccaro, Alessandro | 0 | ITA | −18N | F | −4B | −17N | −19B | −16N | =22N | +20B | +27B | 2.5 | 26.5 | 26.5 | 4.75 | 756 | 0.0 |
| 22 | Diotallevi, Jacopo | 0 | ITA | =6B | −20N | −25B | −26N | −16N | F | =21B | +27N | =15B | 2.5 | 23.0 | 23.0 | 7.25 | 1409 | 0.0 |
| 23 | Buffoni, Emilia | 1525 | ITA | −14N | F | +26B | −6N | +12B | −7B | −10N | −17B | −20N | 2.0 | 32.5 | 32.5 | 5.50 | 1353 | -44.3 |
| 24 | Perrone, Andrea | 1515 | ITA | +5B | −8N | −13N | +27B | −9N | F | F | F | F | 2.0 | 21.5 | 21.5 | 7.00 | 1555 | +2.8 |
| 25 | Boncompagni Del Valle, Cristina Maria | 0 | ITA | F | F | +22N | −15B | −13N | +27B | −18B | −16N | F | 2.0 | 19.5 | 19.5 | 3.50 | 775 | 0.0 |
| 26 | FIDE 552046141 | 0 | — | −8B | F | −23N | +22B | −7N | −12N | −27B | F | −17N | 1.0 | 24.5 | 24.5 | 2.50 | 802 | 0.0 |
| 27 | Camaioni, Damiano | 0 | ITA | −17N | −13B | F | −24N | −10B | −25N | +26N | −22B | −21N | 1.0 | 23.5 | 23.5 | 1.00 | 772 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Gabrieli, SamueleITA+60.07.0 pts · #3
- 2Leotta, SalvatoreITA+58.85.5 pts · #6
- 3Proverbio, MicheleITA+56.05.0 pts · #4
- 1Constantin, Nicola GabrieleITA-56.04.0 pts · #5
- 2Buffoni, EmiliaITA-44.32.0 pts · #22
- 3Fiengo, LorenzoITA-43.24.0 pts · #19
- R9+374 Elo gap
- R1+258 Elo gap
- R6+192 Elo gap