West Ham United were beaten 2-0 at West Bromwich Albion in Barclays U18 Premier League Group 1 on Saturday.
The Hammers matched their hosts for long periods on a wet and windy day in the Midlands, only for two second-half goals to see the Baggies collect all three points.
Academy Director Tony Carr MBE pointed to a disallowed goal and a missed opportunity when the game was still goalless as the major factors in West Ham's defeat.
"We travelled up on the day to West Bromwich on a windy morning," said Carr. "They took the initiative right from the start, did West Brom, and took the game to us right form the word go.
"We weathered the early storm and got ourselves back into the game without really dominating in any way, shape or form. The game started to pan out fairly evenly and neither team looked like they were going to create much.
"Then, 15 minutes before half-time, we scored what we thought was a legitimate goal. Our trialist from Chelsea, Walter Figueira, was put through and he chased alongside their centre-back. They came together shoulder-to-shoulder and Walter withstood the challenge, but their boy fell over as Walter put the ball in the net and the referee gave a foul.
"We went in nil-nil at half-time, then I thought we had our best spell in the 20 minutes after the break. We pushed them back and started to threaten. One particular move saw Kieran Sadlier (pictured) put a great ball into the box for Elliot Lee, who you would have put your house on to score, but he put it just past the post. It was a great opportunity to put us one-up that we didn't take.
"A few minutes later, from a throw-in around our box, their forward Rees Wedderburn turned past one defender and the second defender slipped over, allowing him to go through on goal and he slotted it in. It was a sloppy goal to give away because we weren't organised quickly enough.
"That goal lifted West Brom and they scored a second goal towards the end through Ryan Pace. It was a very even game but they took their chances and we didn't, so we came away with a disappointing defeat."
West Ham will continue their Barclays U18 Premier League Group 1 campaign with a home game with Norwich City on Saturday 1 December, with kick-off at Rush Green at 11am. Parking and admission are both free of charge.
West Ham United U18s: Guzman, Siafa, Onariase, Nasha, Page (Marlow 64), Miles (Cullen 86), Sadlier, Bywater, Shaw, Figueira (Mavila 75, E.Lee
Subs not used: Howes, Girdlestone