OP San Leo 2026

Open SwissStandard

39 players participated in this 5-round tournament, held from 19 Jun 2026 to 21 Jun 2026 in San Leo, Italy. 4 titled players from 6 federations. Top 10 Elo average was 2022, and top seed was Stefan Djuric (🇷🇸 SRB, GM, 2220).

Virgilio Vuelban (🇵🇭 PHI, IM, 2210) won with 4.5/5, ahead of Stefan Djuric (4.5) and Dulamsuren Yanjindulam (4.0). Vuelban shared the lead from round 1, winning on tie-break.

The biggest upset came in round 1: Leopoldo Marandino (1481) beat Francesco Gervasio (1911), a +430-point gap.

Location

🇮🇹San Leo, Italy

Dates

19 Jun 2026 → 21 Jun 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 5 rounds

Top seed

🇷🇸GMStefan Djuric2220

Avg top 10

2,022

Participants

Titled players · 4

GM×1

IM×1

FM×1

WIM×1

Federations · 6 represented

🇮🇹Italy×23

🇸🇲San Marino×2

🇲🇳Mongolia×1

🇵🇭Philippines×1

🇷🇸Serbia×1

🇲🇹Malta×1

Top 3

🥇
IMVirgilio Vuelban
🇵🇭PHI·2210
4.5pts·2344perf+7.1
🥈
GMStefan Djuric
🇷🇸SRB·2220
4.5pts·2347perf+6.3
🥉
WIMDulamsuren Yanjindulam
🇲🇳MGL·2097
4.0pts·2144perf+7.6

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders

Vuelban4.5Djuric4.5Psaila4Gervasio4Yanjindulam4Pruccoli4

R5 · TIEBREAK CLUSTER

2 players finish on 4.5/5. Vuelban takes the title on Buchholz Cut1 (14.5).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

IM Virgilio Vuelban drew with GM Stefan Djuric (Black).

WIN STREAKS · 2 top finishers

IM Virgilio Vuelban 4 wins (R1–R4)GM Stefan Djuric 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1IMVirgilio Vuelban	*	½	—	—
2GMStefan Djuric	½	*	—	—
3FMClarence Psaila	—	—	*	—
4Francesco Gervasio	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Vuelban, VirgilioIM	2210	PHI	+18N	+24B	+8N	+3B	=2N	4.5	14.5	16.5	14.25	2344	+7.1
2	Djuric, StefanGM	2220	SRB	+29B	+9N	+7B	+11N	=1B	4.5	14.5	16.0	13.75	2347	+6.3
3	Yanjindulam, DulamsurenWIM	2097	MGL	+28B	+10N	+5B	−1N	+12B	4.0	14.5	16.5	12.00	2144	+7.6
4	Psaila, ClarenceFM	2007	MLT	+31B	+14N	=12B	=7N	+10B	4.0	12.5	14.0	10.75	2044	+5.8
5	Pruccoli, Leonardo	1911	ITA	+30B	+19N	−3N	+16B	+11B	4.0	12.5	14.0	10.00	2051	+12.0
6	Gervasio, Francesco	1911	ITA	−23N	+39B	+26N	+13B	+14N	4.0	10.0	10.0	8.00	1847	-4.6
7	Stirpe, Claudio	1981	ITA	+25N	+16B	−2N	=4B	+18N	3.5	14.0	16.0	9.50	1945	+0.2
8	Manella, Riccardo	1953	ITA	+15B	+13N	−1B	=12N	+24B	3.5	13.5	15.5	9.50	1955	+6.8
9	Zanirato, Stefano	1838	ITA	+20B	−2B	=18N	+33N	+15B	3.5	12.5	13.5	7.75	1768	-5.8
10	Biordi, Tommaso	1823	SMR	+17N	−3B	+22N	+19B	−4N	3.0	13.5	16.0	8.00	1794	-4.0
11	Trevisan, Stefano	2057	ITA	+22N	+21B	+23N	−2B	−5N	3.0	13.5	15.5	7.00	1805	-36.0
12	Lugaresi, Gabriele	1877	ITA	+39N	+26B	=4N	=8B	−3N	3.0	13.5	13.5	5.75	1904	+13.2
13	Vannelli, Vittorio	1656	ITA	+36N	−8B	+17N	−6N	+25B	3.0	12.5	12.5	5.00	1705	+4.0
14	Righetti, Lorenzo	1730	ITA	+32N	−4B	+25N	+23B	−6B	3.0	12.0	13.0	5.00	1728	-0.4
15	Mouhadab, Gabriel	1492	ITA	−8N	+36B	+21N	+24B	−9N	3.0	11.5	11.5	4.50	1697	+24.4
16	Muntyan, David	0	ITA	+38B	−7N	+27B	−5N	+23B	3.0	11.5	11.5	4.00	1666	0.0
17	Malerba, Mattia	1445	ITA	−10B	+28N	−13B	+31N	+30B	3.0	9.5	11.0	5.00	1651	+40.0
18	Maiocchi, Massimo	1591	ITA	−1B	+35N	=9B	+29N	−7B	2.5	13.0	13.5	3.75	1769	+26.8
19	Camerani, Michele	1625	ITA	+27N	−5B	+32N	−10N	=20B	2.5	11.5	12.5	4.25	1067	-16.0
20	FIDE 23497416	0	—	−9N	−29N	+38B	+26B	=19N	2.5	9.5	9.5	3.25	1589	0.0
21	Cartesegna, Michelangelo	0	ITA	+37B	−11N	−15B	=30N	+35B	2.5	8.0	8.0	1.25	975	0.0
22	FIDE 552035000	0	—	−11B	+37N	−10B	=35N	+33B	2.5	7.5	7.5	1.25	1140	0.0
23	Marandino, Leopoldo	1481	ITA	+6B	+34N	−11B	−14N	−16N	2.0	13.0	14.0	5.00	1706	+13.0
24	Antoniacci, Riccardo	1735	ITA	+35B	−1N	+29B	−15N	−8N	2.0	12.5	13.0	2.00	1606	-15.2
25	Sacca`, Francesco	1511	ITA	−7B	+38N	−14B	+27N	−13N	2.0	11.5	11.5	2.00	966	-12.2
26	Ciervo, Andrea	1625	ITA	+33B	−12N	−6B	−20N	+34B	2.0	10.5	11.5	2.00	1094	-14.0
27	FIDE 28573722	0	—	−19B	+30N	−16N	−25B	+36B	2.0	9.0	9.0	1.50	768	0.0
28	Gerace, Agostino	1578	ITA	−3N	−17B	F	+37B	+32N	2.0	8.0	8.0	1.00	912	-15.2
29	Dicuzzo Liotto, Lorenzo	1615	ITA	−2N	+20B	−24N	−18B	=31N	1.5	11.5	13.0	3.25	1400	-42.0
30	Cartesegna, Sergio Elio	0	ITA	−5N	−27B	+36N	=21B	−17N	1.5	11.5	11.5	1.25	878	0.0
31	Bezercu, Mattia	1545	ITA	−4N	−32B	+37N	−17B	=29B	1.5	9.5	9.5	0.75	1395	-24.8
32	FIDE 552058107	0	—	−14B	+31N	−19B	−34N	−28B	1.0	9.0	10.0	1.50	1427	0.0
33	FIDE 552035085	0	—	−26N	F	+34B	−9B	−22N	1.0	9.0	9.0	1.00	932	0.0
34	FIDE 552058131	0	—	F	−23B	−33N	+32B	−26N	1.0	6.0	6.0	1.00	753	0.0
35	FIDE 552025900	0	—	−24N	−18B	F	=22B	−21N	0.5	9.5	9.5	1.25	863	0.0
36	FIDE 552058115	0	—	−13B	−15N	−30B	F	−27N	0.0	9.5	9.5	0.00	774	0.0
37	FIDE 552015360	0	—	−21N	−22B	−31B	−28N	F	0.0	8.5	8.5	0.00	762	0.0
38	FIDE 552058123	0	—	−16N	−25B	−20N	F	F	0.0	7.5	7.5	0.00	711	0.0
39	Lazzarini, Giulia	1467	SMR	−12B	−6N	F	F	F	0.0	7.0	7.0	0.00	1067	-6.4

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Malerba, MattiaITA
+40.0
3.0 pts · #11
2Maiocchi, MassimoITA
+26.8
2.5 pts · #14
3Mouhadab, GabrielITA
+24.4
3.0 pts · #17

Top rating losers

1Dicuzzo Liotto, LorenzoITA
-42.0
1.5 pts · #23
2Trevisan, StefanoITA
-36.0
3.0 pts · #19
3Bezercu, MattiaITA
-24.8
1.5 pts · #24

Biggest upsets

R1+430 Elo gap
Marandino, Leopoldo1481 beat Gervasio, Francesco1911
R4+243 Elo gap
Mouhadab, Gabriel1492 beat Antoniacci, Riccardo1735
R5+146 Elo gap
Pruccoli, Leonardo1911 beat Trevisan, Stefano2057