West Ham United Under-18s were narrowly beaten by the Estonian U19 national team in the second of their three fixtures at the Tallinn Cup.
Having beaten Dutch side PSV Eindhoven 1-0 in their opening match on Friday, the Hammers went down to a 2-1 defeat on Sunday afternoon, dropping them to second in the four-team table.
However, with PSV and Dinamo Moscow drawing 1-1 in Sunday's other game, West Ham know a victory over the Russians in their final match on Tuesday could be enough to see them lift the trophy.
Concentrating on Sunday's match, a minute of silence was held in memory of the victims of the events in Oslo before the Hammers went ahead through a goal from England U17 defender Leo Chambers (pictured) after 26 minutes.
However, things would turn sour in the second half as Kieran Sadlier was sent-off with 16 minutes remaining. Moments later, Hannes Annier equalised and Martin Kase put the hosts in front before Chambers and Estonia substitute Trevor Ehli were both shown the red card with five minutes to go.
A crowd of 725 fans were on hand to watch the action.
West Ham will take on Dinamo Moscow and PSV will tackle the Estonians at the A.Le Coq Arena on Tuesday. Full details from Tallinn will appear on whufc.com
West Ham United U18: Wootton, Siafa (Potts 64), Shaw (Young 64), Hunt, K.Lee, Chambers, Sadlier, Miles (Hurley 71), E.Lee (Labonne 78), Turgott (Powell 57), Vose (Fanimo 57)