Final score: Newcastle United 4-5 West Ham United
93: That's it! West Ham have come from 3-0 down to win 5-4! Lee has scored a hat-trick on his home-coming, while Tombides has a goal to celebrate too. With Moncur also scoring, there is plenty to be happy about despite Quinn's amazing hat-trick within the opening 13 minutes. Don't forget, we'll have all the exclusive post-match reaction and the highlights on West Ham TV soon!
92: Turgott has another go, but this time Alnwick keeps it out.
90: Substitute Turgott comes close to making it 6-4, only for his well-struck shot to cannon off the crossbar. What a game this has been!
88: Goal! It's game on again as Newcastle pull to within a single goal through replacement Aarons, who fires past Henderson.
85: West Ham, meanwhile, will want to run down the clock and Nick Haycock does so by making his first substitution. Blair Turgott replaces Kieran Sadlier.
83: Into the closing stages now and Newcastle are hunting for a way back into the game, but substitute Rolando Aarons can only head over Henderson's crossbar.
77: Lee comes close to bagging his fourth and West Ham's sixth, only to be denied from close-range by a good save from Newcastle's goalkeeper Alnwick.
73: Callum Roberts replaces Macaulay Gillesphey for Newcastle. That's the Magpies' third and final substitution.
71: Dylan Tombides has clearly got the appetite for scoring more goals himself, too, but this time his free-kkick eludes the target and flies into the trees behind the goal.
69: GOAL! It's 5-3! Lee completes his hat-trick with another penalty! What a return to his home city for the striker! If you read whufc.com this morning, you'll have seen that the forward was looking forward to returning to Newcastle, where his father Rob played for the Magpies during the 1990s. I think he's probably enjoyed his return to Tyneside.
66: Newcastle are showing signs of life here at Whitley Park, but so far Henderson has remained largely untroubled since half-time. Frazer Shaw, meanwhile, goes into the book for a late challenge, but the free-kick comes to nothing. We're approaching the final quarter of the game here, but can the Hammers complete an amazing victory?
60: West Ham are full of confidence now and they come close to making it 5-3 as Tombides fires in a shot that misses the target.
54: GOAL! Unbelievable John! The Hammers are now in front! It's George Moncur who puts West Ham into the lead for the first time as he drives the ball into the net. Moncur scored three times in pre-season but that's his first competitive goal of 2013/14. He missed a penalty in the 2-1 win at Everton last month, of course. I doubt he cares about that, at this precise moment!
50: GOAL! And the Hammers are level! The comeback is complete with a third West Ham goal in a little more than ten minutes! Tombides belts home after a pass from Lletget and it's now 3-3! Tombides scored his last competitive goal for West Ham at Blackpool in March 2011.
48: It's now Whitehead's turn to try his luck, but his long-range effort misses the target.
46: West Ham continue just as they left off prior to the interval. Seb Lletet is so close to celebrating a fourth goal in four Develoment Squad outings, but Alnwick makes a good save, with Lletget's effort otherwise destined for the bottom corner.
2.04pm- The teams are back with us and we're all set for the resumption. Can Elliot Lee bag the second treble of the afternoon?
1.52pm - That's half time, with West Ham two thirds of the way to a remarkable recovery. We'll be back with you shortly.
46: Into stoppage time here at the end of the first half, during which Shaw is forced into a last-ditch clearance at the far stick, as the Toon look to restore their two-goal advantage.
44: Unbelievably, Pelly Ruddock has a chance to make it all square at the interval, but skews his shot well wide.
42: GOAL! Two goals in a minute and Lee has them both! Lletget's original effort is parried away by Alnwick, but Lee reacts the quickest and fires home the rebound. What a game this is.
41: GOAL! West Ham are back in it! Sadlier is felled in the box and the Hammers have a spot kick. Lee steps up and sends the 'keeper the wrong away. 3-1!
40: The Hammers are not throwing in the towel here, far from it. Alnwick is called into serious action as he gets down smartly to repel Lee's low drive.
37: West Ham go close once more. Kieran Sadlier lays it off to Moncur on the edge of the box, but his measured effort drifts narrowly over the bar. Moments later and Sadlier is involved again, as his teasing cross flashes across the face of goal.
35: Lee runs the channel to good effect, as he so often does, and while his centre looks to pick out Tombides, 'keeper Jan Alnwick is able to claim.
29: Haycock's men have certainly found their feet here and are now seeing plenty of the ball, even if chances are at a premium. No shortage of resilience on show!
26: And the Hammers come again. This time Shaw is on the end of Moncur's corner but heads narrowly wide. A goal for the visitors before the interval might make this interesting...
25: George Moncur spurns the Hammers' first notable chance of the afternoon and it's a presentable one too. Dylan Tombides plays it into his path, but the influential No8 can only sidefoot wide. That's better, though.
22: Elliot Lee looks to get in behind the Newcastle back-line but is having no joy thus far. Not the return he'd have been hoping for!
19: Newcastle are forced into an early change, as Romain Amalfitano is withdrawn, with Liam Smith joining the action in his stead.
17: The hosts come forward once more and win a corner for their troubles, but this time it's well dealt with by Hammers left-back Frazer Shaw, who clears his lines.
15: Danny Whitehead is working over time here to try and wrestle back control of proceedings, but has his work cut out to say the least. Astonishing stuff thus far.
13: Goal. I may have spoken too soon as Quinn completes an astonishing ten-minute hat-trick with a brilliant chipped finish. He races onto a long ball over the top and takes it first-time, lobbing the advancing Henderson with a cute left-footed effort from just outside the box.
9: Nick Haycock's men look to be settling down here, as they have their first long spell of possession. It's a long way back from here though.
7: Goal. It's Quinn again, as Newcastle race into a two-goal lead. He latches onto a fine through ball and slots smartly past Stephen Henderson. The Hammers are reeling here but do, at least, have plenty of time to make amends.
3: Goal. The worst possible start I'm afraid, with the hosts hitting the front inside just three minutes. Sebastian Lletget concedes a free-kick on the edge of the box, with Bigirimana taking charge of the set piece. His initial strike comes back off the post but Jonathyn Quinn is on hand on the rebound to slot home! 1-0.
1: Here we go and it's the Hammers who get us off and underway in this first half. Pelly Ruddock has a new central defensive partner in Jamie Harney, with Leo Chambers away with England's Under-19s.
1pm - We're all ready for the off here, as the Hammers bid to bounce back from a 3-2 home defeat to Tottenham Hotspur last time out.
12.30pm - A very good afternoon and welcome to Northumberland FA's Whitley Park for today's Barclays Under-21 Premier League fixture between Newcastle United and West Ham United.
The teams are in and with Raphael Spiegel on international duty, Stephen Henderson is between the sticks this afternoon. Elsewhere, Northern Ireland Under-19 international Jamie Harney, Frazer Shaw and Kieran Sadlier are all set to make their first starts of the campaign.
Newcastle United U21s: Alnwick, Satka, Gillesphey, Drennan, Streete, Good, Olley, Bigirimana, Quinn, Amalfitano, Gilliead
Subs: Aird, Mitchell, Smith, Aarons, Roberts
West Ham United U21s: Henderson, Driver, Shaw, Lletget, Harney, Ruddock, Whitehead, Moncur, Lee, Tombides, Sadlier (Turgott 85)
Subs: Nemrava, Maguire, Miles, Bywater