Palace's Development side travelled up to Hillsborough to take on Sheffield Wednesday in the Professional Development League Two, looking to build on their mid-table place in the southern division against the northern strugglers.
It proved to be a tight, tense affair at the scene of one of the senior side's most nerve-racking encounters in recent memory, but Gary Issott's side were able to weather the storm and take the three points.
The home side started well and went close to opening the scoring inside five minutes when midfielder Ryan Croasdale crashed a sidefooted effort off Kleton Perntreou's crossbar from 25 yards. He had collected a Palace clearance and had a go only to be denied by the woodwork.
On 15 minutes Palace won a penalty which Luke Croll stepped up to take, however he put the effort well wide from 12 yards.
The Owls then went on the offensive and put Palace under pressure, looking the more likely to strike first until the half hour mark. A neat passing move between several Palace players freed Randell Williams to fires a low effort across Brad McDonagh and into the far side of the net to give the visitors a 1-0 lead.
Wednesday went straight back on the front foot, desperate for an immediate reply, which they nearly got through midfielders Sean Clare and Croasdale. The former did well down the right hand side and teed up the latter, but his strike at goal was blocked behind for a corner to the home side.
Jack Stobbs whipped the corner into the Palace box and his cross was met by the head of Clare. Perntreou pulled off a stunning save to deny the midfielder, but it was followed up by the same man to draw The Owls level with ten minutes to go of the first half. Shortly after Clare wasted a golden opportunity for his and Wednesday's second, which proved to be more costly than it first appeared.
On the stroke of half time Palace sprung the offside trap through Michael Phillips, who worked his way in-field from right midfield and struck a low effort past McDonagh to restore the Eagles' advantage.
The home side started the second half brightly, with Clare at the centre of their best moves going forward. Just past the hour mark Wednesday had a gilt-edged opportunity to pull level but Warren Clarke somehow headed Kevin Wright's cross to the backpost over the cross bar.
After that let off Palace were able to hold on for the win, seeing out a scrappy second half and taking a hard-fought three points from Hillsborough.
Sheffield Wednesday XI: McDonagh, Booker, Wright, Croasdale, De Haviland, O'Grady, Stobbs, Hayford, Lavery, Clare, Centeno.
Palace XI: Perntreou; Wynter, O'Dwyer, Croll, Fryers; Phillips, Dymond, Dreher, R Williams; Berkeley-Agyepong; Ladapo.