Ove C Ekebjaerg vs Gert Jan Timmerman
cr NL NBC-25 cr NL NBC-25 1991.??.??
Bishop’s Opening: Boden-Kieseritzky Gambit 0-1

Bernard Bannink vs Gert Jan Timmerman
NED-ch sf Enschede NED round 1 1991.11.??
Bird Opening 1-0

Heikki Westerinen vs Gert Jan Timmerman
Dieren op Dieren NED round 7 1987.07.??
King’s Gambit Accepted 1-0

Wim W J Rakhorst vs Gert Jan Timmerman
NED Cup07 fin corr8385 Netherland 1984.??.??
Nimzo-Larsen Attack 0-1

Elena Chernyaeva vs Gert Jan Timmerman
W-Cup05 fin corr8894 ICCF corr 1988.??.??
Indian Defense: Budapest Defense 0-1

Gert Jan Timmerman vs Mikhail Markovich Umansky
WebChess Gambit Match, games 1 & 2 ICCF round - 2005.07.10
King’s Gambit Accepted 0-1