The teenagers, who had scored a hatful of goals in qualifying rounds to reach the First Round, had trailed 2-0 in Wednesday night's tie at Field Mill.

But the youngsters fought back to force extra time and then snatched an unlikely winner to earn a standing ovation - and a Second Round trip to Lincoln City.

• Click here for full report at the club's official website.

The Stags had netted 35 goals in four qualifying rounds before meeting far tougher opponents in big spending Posh - watched by Barry Fry and Darren Ferguson.

The visitors quickly built up a 2-0 lead after half an hour, before Conor Higginson fired in a fine strike in the 33rd minute.

Nine minutes into the second half the young winger smashed in a tremendous solo equaliser.

Higginson, who might have won the tie himself with a hat-trick goal in normal time, then turned goal provider in the second period of extra time as Grant Ryan nodded in his cross to clinch a memorable victory.

MANSFIELD TOWN: Herriott, Ludlum, Turner, Purcicoe, West, McCormick, Higginson, Naylor, Ryan, Logan, Atkin.