Jan Michael Sprenger vs Oleg Boguslavskyy
Bundesliga 2015/16 Griesheim GER round 10.8 2016.03.12
Sicilian Defense: Accelerated Dragon 1-0

Jan Michael Sprenger vs Ulvi Sadikhov
European Club Cup Antalya TUR round 3.5 2017.10.10
Sicilian Defense: Accelerated Dragon 1-0

Jan Smeets vs Dusko Pavasovic
Corus Group C Wijk aan Zee NED round 8 2004.01.19
Four Knights Game: Bardeleben Variation 1-0

Jan Smeets vs Michael Roiz
Olympiad Dresden GER round 11 2008.11.25
Ruy Lopez: Closed, Breyer 0-1

Jan Willem te Kolste vs Willem Barend Hendrik Meiners
DCA Congress 29th Haarlem NED round 4 1901.??.??
Ruy Lopez: Closed, Averbakh Variation 0-1

Jan-Krzysztof Duda vs Sergei Zhigalko
European Blitz Championship Katowice POL round 20.3 2017.12.15
Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation 0-1

Jani Ahvenjarvi vs Baadur Aleksandrovich Jobava
European Club Cup Skopje MKD round 5.9 2015.10.22
Philidor Defense 0-1

Janis Klavins vs Viacheslav Ragozin
URS-20ch sf4 Riga round 5 1952.??.??
Ruy Lopez: Closed, Worrall Attack 0-1

Janis Yanovich Klovans vs Donatas Lapienis
Match-Tournament (Team) Tallinn EST 1970.??.??
Sicilian Defense: Najdorf Variation, Opocensky Variation 1-0

Janos Balogh vs Sven Erik Gunnar Kjellander
3rd World Correspondence Chess Championship Correspondence 1959.02.01
Sicilian Defense 1/2-1/2