An eighth successive league win at home to Hartpury last Saturday kept Knights at the top of the Championship with games fast running out.
But big-spending Ealing trail Doncaster by just three points and have two games in hand – so Steve Boden’s side must beat them to maintain any realistic hopes of finishing above them in the table.
Ealing and Doncaster are the only two clubs in the Championship to have applied for promotion to the Premiership.
Here’s the key information ahead of Saturday’s game...
Head to head
Knights produced an excellent display in November to beat the then league leaders Ealing 22-5 at Castle Park.
Trailfinders won 38-15 at Vallis Way last May towards the end of the Covid-shortened 2020/21 campaign.
The Trailfinders Sports Club has not been a happy hunting ground for Knights although they did record a 17-17 draw there in 2016.
Last time out
Knights squeezed past Hartpury 11-10 at a muddy Castle Park thanks to Sam Olver’s last gasp penalty.
Trailfinders won a tough game in Jersey, eventually overpowering the Reds 22-10 in a game they trailed by a point at half time.
Back row Simon Uzokwe has scored the third highest number of tries in the Championship this season (12).
Doncaster-born prop Lewis Thiede is an experienced powerhouse. The former Knights tight-head has played in the Premiership with Wasps and Bristol.
Ealing play outstanding rugby and have scored 650 points in 15 games (43.3 average).
They can attack and score from anywhere on the pitch.
Knights have scraped through the last couple of games with the last throw of the dice and must produce a much-improved display this weekend.
A Knights victory is certainly not out of the question.
Trailfinders suffered a surprise 31-19 defeat at home to Bedford Blues earlier this month.