Moments later, Ipswich themselves should have scored – but Ben Johnson, unmarked at the back post from Davis’ cross – nodded over the bar from six yards out.
One goal always looked likely to settle it – and it arrived eight minutes from time after a moment of quality play.
Sarr, leading the line after Daichi Kamada came on for Nketiah, exchanged passes with the Japan international and – dragging the ball past his man – produced a cute dinked finish over Palmer to ripple the back of the net.
The Senegal international sprinted over to the corner flag to boot it in celebration – Mateta-style, with an accompanying Selhurst ‘BOOM’ – and demonstrate the outstanding unity within this Palace squad.
The Eagles withstood a late Ipswich aerial surge, but one goal was enough to see Glasner’s side move up to 11th in the Premier League table ahead of a three-week break in competitive fixtures.
Now just three points off the top half of the table, and with an FA Cup quarter-final to come, who knows just how much the final furlong of this incredible season promises?
Palace: Henderson (GK), Richards, Lacroix, Guéhi, Muñoz, Wharton (Devenny, 87), Lerma, Mitchell (Chilwell, 72), Eze (Esse, 90+2), Sarr, Nketiah (Kamada, 72).
Subs: Turner (GK), Clyne, Kporha, Rodney, França.
Ipswich: Palmer (GK), O’Shea, Woolfenden, Greaves (Taylor, 84), Davis, Phillips, Cajuste, Philogene (Johnson, 66), Enciso (Broadhead, 75), J. Clarke (Hutchinson, 66), Delap (Hirst, 84).
Subs: Walton (GK), Burgess, Townsend, Morsy.
As It Happened