Saints steal it at the death
Mallinder junior came on in the 26th minute to replace Tom Collins, who was injured in a collision with Stuart Hogg's knee, and slotted in superbly at fullback. And when his big moment came, he grabbed it to earn the Man-of-the-Match award.
Finn Russell had kicked four penalties to keep Glasgow Warriors in touch after Saints had picked up two tries from their irresistible driving line-out through Teimana Harrison and Christian Day and then Hogg's booming right boot gave the visitors the lead at 15-12 with 10 minutes to go.
The game seemed well within the Warriors' grasp until replacement back row man Tim Swinson was caught delivering a left upper cut into the face of Saints replacement hooker Mikey Haywood five minutes from time. He saw yellow and the home sent went on the offensive.
A penalty allowed Steve Myler to kick into the corner for a final shot at a third line-out try, but instead the replacement outside half kicked cross field to North. It was the Welshman against Russell and the home wing's tap down went straight into the hands of the supporting Mallinder who crossed wide out on the left.
Myler stepped up to land the conversion and victory had been grabbed from the jaws of defeat. Now the Saints can go to the Scarlets in Round Six with a chance of getting into the quarterfinals as one of the three best runners-up in their pool.
The scorers:
For Northampton Saints:
Tries: Harrison, Day, Mallinder
Cons: Hanrahan, Myler
For Glasgow Warriors:
Pens: Russell 4, Hogg
Yellow card: Mikey Haywood (Northampton Saints, 75 – foul play)
Teams:
Northampton Saints: 15 Ben Foden, 14 Tom Collins, 13 George Pisi, 12 Luther Burrell, 11 George North, 10 JJ Hanrahan, 9 Lee Dickson (captain), 8 Teimana Harrison, 7 Tom Wood, 6 Jamie Gibson, 5 Christian Day, 4 Courtney Lawes, 3 Paul Hill, 2 Dylan Hartley, 1 Alex Waller.
Replacements: 16 Mikey Haywood, 17 Ethan Waller, 18 Gareth Denman, 19 Michael Paterson, 20 Jon Fisher, 21 Tom Kessell, 22 Stephen Myler, 23 Harry Mallinder.
Glasgow Warriors: 15 Stuart Hogg, 14 Lee Jones, 13 Alex Dunbar, 12 Sam Johnson, 11 Sean Lamont, 10 Finn Russell, 9 Ali Price, 8 Adam Ashe, 7 Chris Fusaro, 6 Ryan Wilson, 5 Jonny Gray (captain), 4 Leone Nakarawa, 3 Sila Puafisi, 2 Pat MacArthur, 1 Gordon Reid.
Replacements: 16 Shalva Mamukashvili, 17 Alex Allan, 18 Zander Fagerson, 19 Tim Swinson, 20 Simone Favaro, 21 Grayson Hart, 22 Duncan Weir, 23 Taqele Naiyaravoro.
Referee: Romain Poite (France)
Assistant referees: Cyril Lafon (France), Stéphane Boyer (France)
TMO: Philippe Bonhoure (France)