Goals either side of half time proved costly, as Crystal Palace ran out winners in our latest U23s fixture.
The U's had taken the lead through Decarrey Sheriff, but the Eagles turned things on their head just before half time and didn't look back from there.
Sheriff continued a recent good run of form, as he opened the scoring after just 13 minutes.
Ryan Gondoh was the provider, setting up his teammate to strike from the edge of the box to beat Tupper and make it 1-0.
The home side were to retain that advantage for much of the first half and it looked like they might be able to take that lead into half time.
However, the Eagles went ahead through a fine strike from Jason Lokilo, before Nya Kirby turned the game on its head with a close range finish on the stroke of 45 minutes.
The U's would have been hoping to get back into the game after half time, but found themselves further behind ten minutes into the second half.
Levi Lumeka grabbed the third, rising highest to power home a header from Sean Robertson's cross.
And midway through the second half, Lumeka turned provider, as he set up the experienced Jordan Mutch to slot home and take the game further away from the U's.
That was the end of the scoring and it finished 4-1 to the Eagles who remain top of the table with those three points. The U's are next in action on Thursday against Watford.