Aberto Do Brasil 2026 Campo Grande MS Std

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87 players participated in this 6-round tournament, held from 05 Jun 2026 to 07 Jun 2026 in Campo Grande MS, Brazil. 4 titled players from 2 federations. Top 10 Elo average was 2142, and top seed was Juan Sebastian Melian (🇵🇾 PAR, IM, 2372).

Juan Sebastian Melian (🇵🇾 PAR, IM, 2372) won with 5.5/6, ahead of Jose Ferreira Azevedo Junior (5.5) and Fernando Junior Freire Dos Santos Dutra (5.0). Melian shared the lead from round 1, winning on tie-break.

The biggest upset came in round 3: Romulo Andretto Barreiros (1516) beat Guilherme Serafim (1963), a +447-point gap.

Location

🇧🇷Campo Grande MS, Brazil

Dates

05 Jun 2026 → 07 Jun 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 6 rounds

Top seed

🇵🇾IMJuan Sebastian Melian2372

Avg top 10

2,142

Participants

Titled players · 4

IM×1

FM×1

CM×2

Federations · 2 represented

🇧🇷Brazil×61

🇵🇾Paraguay×4

Top 3

🥇
IMJuan Sebastian Melian
🇵🇾PAR·2372
5.5pts·2466perf+4.5
🥈
Jose Ferreira Azevedo Junior
🇧🇷BRA·2167
5.5pts·2388perf+26.4
🥉
CMFernando Junior Freire Dos Santos Dutra
🇧🇷BRA·2265
5.0pts·2293perf+7.6

How it unfolded

Top 6 · 6 rounds

Tight race until R6; 2 players tied at 5.5/6, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.

Co-leaders

Melian5.5Azevedo Junior5.5Dos Santos Dutra5Mafra5Rodrigues5De Oliveira5

R6 · TIEBREAK CLUSTER

2 players finish on 5.5/6. Melian takes the title on Buchholz Cut1 (22.5).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

IM Juan Sebastian Melian drew with Jose Ferreira Azevedo Junior (Black).

WIN STREAKS · 3 top finishers

IM Juan Sebastian Melian 5 wins (R1–R5)Jose Ferreira Azevedo Junior 5 wins (R1–R5)CM Fernando Junior Freire Dos Santos Dutra 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1IMJuan Sebastian Melian	*	½	1	1
2Jose Ferreira Azevedo Junior	½	*	—	—
3CMFernando Junior Freire Dos Santos Dutra	0	—	*	—
4CMKaiser Luiz Mafra	0	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Melian, Juan SebastianIM	2372	PAR	+31B	+19N	+34B	+6N	+3B	=2N	5.5	22.5	25.5	22.75	2466	+4.5
2	Azevedo Junior, Jose Ferreira	2167	BRA	+50N	+17B	+26N	+12B	+8N	=1B	5.5	21.5	24.5	21.75	2388	+26.4
3	Dos Santos Dutra, Fernando Junior FreireCM	2265	BRA	+60N	+15B	+25N	+4B	−1N	+10B	5.0	22.5	24.5	19.00	2293	+7.6
4	De Oliveira, Aquiles Machado	2056	BRA	+27B	+20N	+13B	−3N	+9B	+21N	5.0	21.5	25.0	20.00	2186	+16.6
5	Rodrigues, Tiago Pereira	2102	BRA	+61N	−30B	+18N	+40B	+17N	+12B	5.0	18.0	20.0	17.00	2074	-1.8
6	Mafra, Kaiser LuizCM	2042	BRA	+65N	+37B	+57N	−1B	+30N	+16B	5.0	18.0	20.0	14.50	2132	+12.6
7	Cristino, Felipe Borges	1975	BRA	+41B	−32N	+38B	+44N	+35B	+14N	5.0	16.0	19.0	16.00	1924	-4.0
8	Neves, Leonardo C B C De Almeida	2175	BRA	+47B	+35N	+28B	=9N	−2B	+24N	4.5	20.0	23.0	15.25	2136	-2.0
9	Ramalho, Lucas Pereira	1995	BRA	+66N	+39B	+33N	=8B	−4N	+25B	4.5	19.0	21.0	13.75	2045	+18.0
10	Vinales Gonzalez, Enzo MathiasFM	2051	PAR	+38B	=14N	+56B	+34N	+24B	−3N	4.5	18.5	21.0	14.00	2088	+9.2
11	Allo Collante, Enrique	2140	PAR	+72B	−13N	=31B	+56N	+28B	+15B	4.5	17.0	18.5	13.00	1940	-18.8
12	Roman, Josemar Cespedes	1961	BRA	+73B	+44N	+32B	−2N	+13B	−5N	4.0	20.5	22.0	11.50	1961	+1.4
13	Vilela,Vitor Gabriel Felix	1793	BRA	+54N	+11B	−4N	+60B	−12N	+49B	4.0	19.5	21.5	12.50	1918	+24.0
14	Andretto,Matheus dos Reis	1736	BRA	+59N	=10B	+42N	=30B	+26N	−7B	4.0	19.0	21.5	12.75	1916	+35.2
15	Marinho, Marlon Glauber	1824	BRA	+74B	−3N	+41B	+29N	+48B	−11N	4.0	19.0	20.5	11.00	1885	+8.0
16	Gazineu Neto, Rubens	1931	BRA	+75B	+29N	+36B	−24N	+20B	−6N	4.0	19.0	20.0	11.50	1884	-3.0
17	De Moraes, Lorenzo Ogeda	1798	BRA	+69B	−2N	+73B	+36N	−5B	+45N	4.0	18.5	20.0	9.50	1867	+10.4
18	Samaniego, Diego Pinheiro	1879	BRA	+80B	=56N	−5B	=27N	+31B	+32N	4.0	17.0	18.0	10.00	1901	+3.2
19	Oshiro, Edson Hidenobu	1825	BRA	+53N	−1B	+65N	−33B	+61N	+46B	4.0	16.5	18.5	10.00	1713	-22.0
20	Matos, Fagner Morel	1785	BRA	+64N	−4B	+58N	+61B	−16N	+43B	4.0	16.5	18.5	9.50	1873	+12.4
21	Farias, Jose Nogueira de	1894	BRA	+76N	−36B	+63N	+37B	+33N	−4B	4.0	16.0	17.0	9.00	1744	-14.2
22	Serafim, Guilherme	1963	BRA	+49N	−57B	−60N	+58B	+47N	+40B	4.0	14.0	16.0	11.50	1633	-29.4
23	Sa, Edivaldo Alves De	1932	BRA	+55N	−33B	−61N	+62B	+60N	+37B	4.0	13.0	15.0	10.00	1754	-11.0
24	Souza dos Santos,Matheus Garcett	2051	BRA	+63N	+40B	=30N	+16B	−10N	−8B	3.5	19.0	21.0	10.50	1938	-13.4
25	Fedrizzi, Roberto Senatore	1909	BRA	+67B	+48N	−3B	=32N	+39B	−9N	3.5	18.5	20.5	9.50	1842	-8.6
26	Fontoura, Alexandre Souza	1849	BRA	+70B	+79N	−2B	+45N	−14B	=29N	3.5	18.0	19.0	7.75	1702	-16.8
27	Freire, Rafaela A. Correa Dutra	0	BRA	−4N	+81B	=43N	=18B	=52N	+60B	3.5	17.0	18.0	8.00	1844	0.0
28	De Souza, Arthur Neres	1860	BRA	+62N	+83B	−8N	=39B	−11N	+72B	3.5	15.5	16.5	6.00	1781	-17.6
29	Kaori Shikasho, Kariny	1617	BRA	+82N	−16B	+84N	−15B	+77N	=26B	3.5	13.5	14.5	4.75	1595	-3.2
30	Cavalcante, Pietro Lukas B Souza	1787	BRA	F	+5N	=24B	=14N	−6B	+48N	3.0	20.5	20.5	11.75	1970	+45.2
31	Roeder, Guilherme H Oliveira	1526	BRA	−1N	+55B	=11N	=42B	−18N	+76B	3.0	20.0	21.0	7.75	1637	+9.2
32	Delvalle, Miguel Lezcano	1700	BRA	+86N	+7B	−12N	=25B	=43N	−18B	3.0	19.5	20.0	8.75	1874	+40.4
33	Ferezin, Ramon German Fuentealba	1650	BRA	F	+23N	−9B	+19N	−21B	+35N	3.0	19.5	19.5	11.00	1963	+78.8
34	Areco Alvarenga, Eric Adriel	1920	PAR	+58N	+46B	−1N	−10B	+50N	−44B	3.0	19.0	21.5	8.50	1770	-38.4
35	Oliveira, Joao Victor da Silva	1808	BRA	+81N	−8B	+49N	+46B	−7N	−33B	3.0	18.5	19.5	7.00	1667	-16.2
36	Insaurralde, Rafael	1564	BRA	+77B	+21N	−16N	−17B	=42N	=51B	3.0	18.0	19.0	8.00	1749	+22.8
37	Mendonca, Erico	1706	BRA	+51B	−6N	+79B	−21N	+68B	−23N	3.0	18.0	19.0	6.00	1156	-11.8
38	Nakati, Teo De Moraes	0	BRA	−10N	+54B	−7N	+64B	−40N	+62B	3.0	17.5	19.5	7.00	1123	0.0
39	Yassuda,Mariana Mayum Shiguematsu	1690	BRA	+78B	−9N	+51B	=28N	−25N	=42B	3.0	17.5	18.5	7.25	1648	-5.6
40	Vieira, Luana Saddi	1744	BRA	+87B	−24N	+67B	−5N	+38B	−22N	3.0	17.5	17.5	5.00	1239	-9.2
41	FIDE 44758391	0	—	−7N	+71B	−15N	+54B	−46N	+64B	3.0	17.0	19.0	7.00	1013	0.0
42	FIDE 580007457	0	—	+45B	=52N	−14B	=31N	=36B	=39N	3.0	16.0	19.0	9.00	1652	0.0
43	Cucolloto, Rogerio	2008	BRA	−56B	+70N	=27B	+53N	=32B	−20N	3.0	16.0	18.0	8.25	1550	-45.6
44	Leite Lima,Luiz Henrique	1681	BRA	+71N	−12B	+62N	−7B	F	+34N	3.0	16.0	18.0	7.00	1827	+19.6
45	Spinola, Guilherme Grava	1636	BRA	−42N	+66B	+64N	−26B	+55N	−17B	3.0	15.5	17.5	7.00	1024	-20.8
46	Andrade,Ananda Vitoria Lopes	1640	BRA	+68B	−34N	+82B	−35N	+41B	−19N	3.0	15.0	16.0	6.00	1051	-28.0
47	Assan, Lucio Charif Medina	1504	BRA	−8N	−62B	+72B	+67N	−22B	+68N	3.0	14.5	16.0	5.50	1634	+11.6
48	Roeder, Inacio Clacier	1560	BRA	+84N	−25B	+83N	+52B	−15N	−30B	3.0	14.5	15.5	5.00	1628	+10.4
49	Da Costa, Geinison M Oliveira	0	BRA	−22B	+78N	−35B	+82N	+57B	−13N	3.0	14.5	15.5	4.50	1614	0.0
50	Muller, Yasmin Paredes	1487	BRA	−2B	−51N	+87B	+69N	−34B	+79N	3.0	14.5	14.5	3.00	1087	-6.4
51	FIDE 580003206	0	—	−37N	+50B	−39N	=63B	+65N	=36N	3.0	14.0	16.0	7.50	1525	0.0
52	Taveira, Davi Tavares Barbosa	1762	BRA	F	=42B	+76N	−48N	=27B	+56N	3.0	13.0	13.0	6.75	760	-30.4
53	Carvalho, Enzo Pereira	0	BRA	−19B	=72N	+75B	−43B	=63N	+66N	3.0	12.5	13.5	4.75	1494	0.0
54	FIDE 580007490	0	—	−13B	−38N	+80B	−41N	+75B	+73N	3.0	12.5	13.5	3.50	993	0.0
55	Salina, Ian Brenno Caminha	0	BRA	−23B	−31N	+85B	+83N	−45B	+77N	3.0	12.0	13.0	3.00	898	0.0
56	Holsback, Eduardo Elias	0	BRA	+43N	=18B	−10N	−11B	+59N	−52B	2.5	19.0	21.5	7.50	1819	0.0
57	Viana, Paulo Vitor Monteiro	1663	BRA	+85B	+22N	−6B	F	−49N	=58B	2.5	15.5	15.5	6.25	2003	+30.4
58	Ortiz, Kamilly Victoria Barbosa	0	BRA	−34B	+87N	−20B	−22N	+78B	=57N	2.5	14.5	14.5	2.25	1511	0.0
59	FIDE 580001661	0	—	−14B	−67N	=70B	+74N	−56B	+75N	2.5	12.0	13.0	3.50	936	0.0
60	Barreiros, Romulo Andretto	1516	BRA	−3B	+74N	+22B	−13N	−23B	−27N	2.0	20.5	22.0	5.50	1692	+23.6
61	Dos Santos Correa, Eder Francisco	0	BRA	−5B	+77N	+23B	−20N	−19B	F	2.0	18.0	19.0	5.00	1718	0.0
62	Vilela,Mariana Felix	0	BRA	−28B	+47N	−44B	−23N	+82B	−38N	2.0	16.5	17.5	4.00	1551	0.0
63	Medeiros Alves, Wilson Cezar	0	BRA	−24B	+68N	−21B	=51N	=53B	F	2.0	15.5	15.5	5.00	1173	0.0
64	FIDE 580001190	0	—	−20B	+80N	−45B	−38N	+67B	−41N	2.0	15.0	16.0	3.00	911	0.0
65	Oliveira Filho, Antonio Marcos S	0	BRA	−6B	+85N	−19B	−68N	−51B	+78N	2.0	15.0	16.0	2.00	1134	0.0
66	Rosset, Eduardo	0	BRA	−9B	−45N	+78B	+79N	F	−53B	2.0	14.5	15.5	2.00	1016	0.0
67	Monteiro, Oswaldo Fernandes	0	BRA	−25N	+59B	−40N	−47B	−64N	+84B	2.0	14.0	15.0	3.50	919	0.0
68	FIDE 580001645	0	—	−46N	−63B	+81N	+65B	−37N	−47B	2.0	13.0	14.0	3.00	817	0.0
69	FIDE 580007465	0	—	−17N	−76B	+71N	−50B	=73B	=70N	2.0	12.5	13.5	3.75	843	0.0
70	Napolitano, Loren Moreira	0	BRA	−26N	−43B	=59N	+86B	−72N	=69B	2.0	12.5	13.0	2.75	975	0.0
71	FIDE 580007414	0	—	−44B	−41N	−69B	−80N	+87N	+81B	2.0	10.0	10.0	1.00	881	0.0
72	Fedrizzi, Vitor Hugo Araujo	1468	BRA	−11N	=53B	−47N	F	+70B	−28N	1.5	16.0	17.0	3.50	944	-24.4
73	FIDE 580001025	0	—	−12N	+86B	−17N	−77B	=69N	−54B	1.5	14.0	14.5	1.50	1080	0.0
74	FIDE 538018519	0	—	−15N	−60B	=86N	−59B	−81N	+87B	1.5	10.0	10.0	0.25	870	0.0
75	FIDE 44754280	0	—	−16N	−84B	−53N	+87B	−54N	−59B	1.0	13.5	13.5	0.00	1131	0.0
76	Da Costa, Samuel Marques	0	BRA	−21B	+69N	−52B	F	F	−31N	1.0	13.0	13.0	2.00	927	0.0
77	FIDE 580001599	0	—	−36N	−61B	F	+73N	−29B	−55B	1.0	13.0	13.0	1.50	791	0.0
78	FIDE 580007449	0	—	−39N	−49B	−66N	+81B	−58N	−65B	1.0	12.5	13.5	1.00	890	0.0
79	FIDE 580007481	0	—	F	−26B	−37N	−66B	+80N	−50B	1.0	12.5	12.5	1.00	881	0.0
80	FIDE 44758430	0	—	−18N	−64B	−54N	+71B	−79B	−85N	1.0	12.0	13.0	2.00	1079	0.0
81	Nantes,Maria Julia Olazar	0	BRA	−35B	−27N	−68B	−78N	+74B	−71N	1.0	12.0	13.0	1.50	1008	0.0
82	FIDE 580007511	0	—	−29B	F	−46N	−49B	−62N	+86B	1.0	12.0	12.0	0.50	829	0.0
83	FIDE 580001637	0	—	F	−28N	−48B	−55B	+86N	F	1.0	12.0	12.0	0.50	910	0.0
84	FIDE 44769814	0	—	−48B	+75N	−29B	F	F	−67N	1.0	11.0	11.0	1.00	789	0.0
85	FIDE 580007473	0	—	−57N	−65B	−55N	F	F	+80B	1.0	9.5	9.5	1.00	863	0.0
86	FIDE 580001564	0	—	−32B	−73N	=74B	−70N	−83B	−82N	0.5	9.0	10.0	0.75	900	0.0
87	FIDE 580007430	0	—	−40N	−58B	−50N	−75N	−71B	−74N	0.0	12.0	13.0	0.00	816	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Ferezin, Ramon German FuentealbaBRA
+78.8
3.0 pts · #15
2Cavalcante, Pietro Lukas B SouzaBRA
+45.2
3.0 pts · #13
3Delvalle, Miguel LezcanoBRA
+40.4
3.0 pts · #21

Top rating losers

1Cucolloto, RogerioBRA
-45.6
3.0 pts · #51
2Areco Alvarenga, Eric AdrielPAR
-38.4
3.0 pts · #26
3Taveira, Davi Tavares BarbosaBRA
-30.4
3.0 pts · #58

Biggest upsets

R3+447 Elo gap
Barreiros, Romulo Andretto1516 beat Serafim, Guilherme1963
R2+347 Elo gap
Vilela,Vitor Gabriel Felix1793 beat Allo Collante, Enrique2140
R2+330 Elo gap
Insaurralde, Rafael1564 beat Farias, Jose Nogueira de1894