- Bats Right, Throws Right
Timmer allowed one run in 1 2/3 IP for the Netherlands in the 2012 World Junior Championship. He debuted in the Hoofdklasse with DOOR Neptunus in 2013 (1-0, 3 H, 1 R, 3 BB, 1 K in 8 IP). He beat France in the 2013 European Junior Championship (1-0, 2.45, 5 H, 4 BB, 7 K, 2 R in 7 1/3 IP in 2 G). He began 2014 in the Neptunus rotation after the departure of Tim Roodenburg. He started Neptunus' historic 1,000th win, the first Hoofdklasse team to that figure. He allowed five hits, three walks and four runs in 4 2/3 IP against the Vaessen Pioniers before Misja Harcksen relieved and got the decision in a 12-4 win.