Having won in Berlin and Glasgow, seven-time champion Van Gerwen now leads the table by eight points.
He defeated Luke Littler in the final leg after defeating Gerwyn Price in the quarterfinals.
Although Aspinall had not won a Premier League match this year, he defeated Rob Cross and Michael Smith on the night.
Sky Sports quoted Van Gerwen as saying, “I adore those gold trophies! I feel good about my victory.
“Most people assume it’s simple, but it’s not. You have to constantly cope with the pressure.
“I won’t set any goals for myself. I’m going week by week with no objectives or targets—I just need to stay focused to avoid becoming bored.
“I don’t know how many nights I can win, I don’t want to give myself a target but it could be a record [number of weekly wins] this year.”
