Ealing started fast, looking to dominate the territory. The early pressure paid off as Will Montgomery crossed within seven minutes to open the scoring. Dan Jones slotted the conversion to give Trailfinders a seven point lead.
It was more of the same for the next ten minutes, with flyhalf Dan Jones adding his name to the scoresheet with a swan dive just to the right of the sticks. He then converted his own try to take Ealing 14 points clear of Doncaster.
With 22 minutes played, Geordie Gwynn crossed the try line in the corner but the ref took play back for an off the ball incident.
Trailfinders entered the sheds up 14-0 at the halfway stage.
Doncaster were keen to get back into the tie, crossing the line just four minutes in to the second half, only for it to be chalked off for a knock on.
Ealing continued to pile on the pressure however, as Geordie Gwynn scored his second try of the game 50 minutes in. Just four minutes later, Ealing were in again. This time it was Scott Buckley who scored, taking the scoreline to 26-0 in favour of the travelling side.
Trailfinders won a pen in the Doncaster twenty-two and opted to take a shot at goal. Dan Jones extended the lead by three, making the score 29-0 to Ealing.
The visiting team continued to stifle the Knights attack. The home side finally breached however, crossing the try line for a late consolation try in the 78th minute.
Final score: Doncaster Knights 7-29 Ealing Trailfinders