Unheralded Buriram United made history by reaching the last 16 of the AFC Champions League for the first time after a thrilling night's action on Wednesday.
The club from provincial Thailand missed a first-half penalty but then twice came back from a goal down - within two minutes each time - to snatch a 2-2 draw with K League champions FC Seoul. The result was enough to take Buriram through behind Group E winners Seoul by a solitary point, after Japan's Vegalta Sendai, their main rivals for the second qualifying spot, went down 2-1 to Jiangsu Sainty.
Buriram and Sendai went into their final group games with identical records, meaning another matching result on Wednesday could have seen their fates decided by a tally of yellow and red cards or even a special lottery.
In Seoul, Carmelo Gonzalez should have put Buriram in front from the penalty spot before half-time, but goalkeeper Yu Sang-Hun dived smartly low and to his right to turn the shot around the post.
Nine minutes after the break, the hosts carved open Buriram for the opener with a move which criss-crossed the pitch and was finished sweetly by Jung Seung-Yong, arriving late in the box.
However, the lead was short-lived. In less than two minutes, a shot from Gonzalez was laid off by Kai Hirano for Ekkachai Samre, who revived Buriram's hopes by putting them level.
Another quick-fire exchange of goals, in the 74th and 75th minutes, made it 2-2. Kim Hyun-Sung's header from a set-piece was followed by a raking free-kick from Buriram's Theerathon Bunmathan, which crept in untouched.
Jiangsu silence Sendai
In Sendai, Naoki Sugai's opener for the hosts was cancelled out by Liu Jianye in the first half, but Hamdi Salihi popped up on 62 minutes to give Jiangsu a 2-1 lead.
However, Jiangsu needed to beat Vegalta by six goals to qualify, a result which never seemed likely. With no further scores both teams missed the cut - news which was greeted with wild celebrations by Buriram's fans in Seoul.
Meanwhile in Group F, Jeonbuk Hyundai Motors edged fellow former champions Urawa Red Diamonds for a place in the knock-out stage when they drew 0-0 with China's Guangzhou Evergrande.
The scoreless draw in Guangzhou was enough to put the 2006 champions through on goal difference, despite Urawa's 1-0 win over Thailand's Muangthong United. Guangzhou, coached by Italy's Marcello Lippi, finished top.