Tom Miller's 83rd-minute strike saw Lincoln come from behind to gain a 2-1 home victory over Nuneaton.
Nicky Nicolau, who had earlier brought Lincoln level, delivered an inswinging corner from the left and Miller headed in from six yards.
James Armson had given Nuneaton a dream start with a third-minute goal, sweeping the ball right-footed into the top corner from 12 yards.
Wesley York went close to adding a second goal after 12 minutes but his 12-yard shot was well saved by Paul Farman.
But The Imps finally got back on level terms in the 75th minute, following Simon Forsdick's sending-off.
Forsdick was shown a straight red for hauling down Vadaine Oliver and the foul was punished further by Nicolau's 20 yard free-kick which arrowed into the bottom corner.
Lincoln could even afford to miss a 90th-minute penalty, Jamie Taylor's effort hitting the crossbar.