Neptunus left two runners behind in the first inning in which the Storks-defense turned a double play.
The team was retired in order in the second at bat, but then scored a run in the third off of starter Nick Winkel.
With two outs, Benjamin Dille walked, stole second base and scored on a single by Dwayne Kemp.
But the lead was shortlived.
Orlando Yntema started tonight for Neptunus, which is a change in the starting rotation that was used so far by Head Coach Ronald Jaarsma.
In the previous series, lefthander Diegomar Markwell always started the opener, then Yntema pitched in the second game.
Markwell now will start Game 2 on Friday-evening.
The change of order has to do with the upcoming European Champions Cup-tournament, which opens next Wednesday in Rotterdam.
With that, Yntema got the chance to become the first 6-game winner of the season, but he threw one inning short to accomplish that.
The righthander encountered not much problems in the first three innings.
Storks stranded a runner at first base in the first inning, then was retired in the second at bat.
In the third, with one out, Yntema walked Tijani Dunlop, who stole second base, but then was left behind.
But with two outs in the top of the fourth, Storks struck with four runs on five basehits.
With one out, Joost van den Bergh singled and with two outs, he stole second base, then scored the tying run on a single by Aldi Guzman.
Hereafter, Jurriaan Dijk also singled and Philipp Brandl followed with a runscoring double to put Storks ahead, 2-1.
Next, Tijani Dunlop walked and then Quinlan de Windt delivered a 2-run single to make it a 4-1 score.
Dijk and Brandl both scored, but Dunlop was eliminated after having advanced second base to end the inning.
Now trailing 4-1, Neptunus answered with a 6-run rally with two outs on only three hits in the bottom of the fourth off of new pitcher Gijs Timmer.
He walked lead-off hitter Dudley Leonora and gave up an infield-hit to Shaldimar Daantji.
With one out, Timmer got the bases loaded when he walked Gregory Muller.
With two outs, Stijn van der Meer connected for a 2-run single.
With runners at the corners, Van der Meer stole second base, then Muller stole the plate to make it a 4-4 score.
Hereafter, Benjamin Dille walked.
A double-steal followed, then Dwayne Kemp put Neptunus ahead with a 2-un double.
A grounder by next hitter Gianison Boekhoudt ended in a throwing error, enabling Kemp to score and increase the lead to 7-4.
In the top of the fifth, Taylor Clemensia became the new pitcher for Neptunus.
With one out, the lefthander hit Kendrick Delima with a pitch and gave up a single to Joost van den Bergh.
The two later moved to second and third base, but Clemensia closed with a strikeout.
After Berry van Driel had thrown the top of the sixth for Neptunus, the home-team added a run in the bottom of the sixth.
With two outs, Benjamin Dille reached on an error.
He then first moved to third base, then scored when an outfield-error followed a single by Dwayne Kemp, who was then eliminated himself on third base trying to advance an additional base after having advanced to second base on the error.
Storks got a scoring opportunity in the top of the seventh off of Japanese lefthander Riki Saito.
He gave up a lead-off single to Sem Petit, who moved on a wild pitch.
Moments later, Petit was called out for runner out of line trying to avoid being tagged out on a grounder towards third base by Kendrick Delima.
With two outs, Nick Nefs walked, but a force out ended the at bat.
Neptunus added four more runs in the bottom of the seventh.
Gianison Boekhoudt led off with a double and scored on a single by Dudley Leonora.
With one out, Quintin De Cuba batted in another run with a double.
And with two outs and the bases loaded, Benjamin Dille delivered a 2-run single that lifted the lead to 13-4.
Loek van Mil threw the final two innings for Neptunus.
The righthander retired the side in both at bats, striking out four hitters.
As the starting pitcher didn't pitch the required five innings with his team having the lead, it is up to the Official Scorers to determine the winning pitcher when more than one reliever is used.
The rule then states that the pitcher who pitches 'the most effective' will be credited with the win.
And in this game, that clearly was Van Mil.