Oscar de la Riva Aguado vs Pentala Harikrishna
Pamplona International Pamplona ESP round 2 2005.12.24
Caro-Kann Defense 0-1

Oscar Panno vs Efim Geller
Amsterdam Candidates Amsterdam NED round 3 1956.03.30
English Opening: Agincourt Defense, Keres Defense 1/2-1/2

Oskar von Bahr vs Bartosz Socko
Rilton Cup 2013/14 Stockholm SWE round 1.1 2013.12.27
English Opening: Agincourt Defense 0-1

Oskar von Bahr vs David Berczes
Rilton Cup Stockholm SWE round 6 2010.01.02
Philidor Defense 1/2-1/2

Oyvind Normann vs Bjorn Haveland
Nordic Championship Bergen NOR round 9 2001.08.12
English Opening: Anglo-Indian Defense 1/2-1/2

P Iniyan vs Nutakki Priyanka
8th Sunway Sitges 2021 Sitges ESP round 1.17 2021.12.13
Russian Game 0-1

Pablo Ismael Acosta vs Andree Fonseca Medina
13th ch-South-Am Junior Manta ECU round 8.6 2017.04.29
Amazon Attack: Siberian Attack 1-0

Pablo Lafuente vs Omar Noaman Al Ali
Chess Olympiad Khanty-Mansiysk RUS round 4 2010.09.24
Queen’s Gambit Declined: Anti-Tartakower Variation 1/2-1/2

Pablo Lafuente vs Salvador Alonso
Boca Open Buenos Aires ARG round 8 2001.09.27
English Opening: Anglo-Indian Defense 1-0

Pablo San Segundo Carrillo vs Shakhriyar Mamedyarov
EuTCh Leon ESP round 1 2001.11.06
Grünfeld Defense: Exchange Variation 0-1