One who didnt attack but i think broke his leg was Rey Mysterio and who attacked him was Kane.
PhenomForever.com is a website deicated to The Undertaker.
he went in to the hospitle
He returned at Summerslam! and i think he will return at survivor series
no one can break the undertker's undefeated streak
Jeff hardy
Only wwe knows until further notice
Stuxnet
If you mean when he was attacked by sheamus then late 2010 or early 2011.
Attacked: I attacked You attacked He/She attacked We attacked You (plural) attacked They attacked
It was the Undertker's most evil and his darkest persona, however even before he retires if he chooses to relive that time, i think he would but alone, with no Ministry
Attacked: I attacked You attacked He/She attacked We attacked You (plural) attacked They attacked
he comes back at summerslam 2010 and reveals who attacked him it turns out to be Kane