Chelsea have knocked Arsenal out of the FA Youth Cup in front of over 25,000 fans at Stamford Bridge.
Milan Lalkovic's last-gasp winner was enough for the Blues.
The Gunners went ahead after two minutes through a Billy Clifford own goal, but Slovakian striker Lalkovic equalised five minutes after the break and grabbed his second in stoppage time.
Young midfield star Josh McEachran played the full 90 minutes for Chelsea, but the evening was overshadowed by a serious injury to Arsenal defender Nico Yennaris, who was stretchered off after 24 minutes with a suspected broken leg.
