One of the opponents for the Undertaker that, sadly, never materialised was ex-England cricketer Andrew Flintoff!
Yes, you heard it right. I'm reading Flintoff's book and in it, he describes how his one-fight boxing career came after his attempt to train as a wrestler and face the guy he liked watching in the 'WWF', the Undertaker. He went into a training camp in Florida, got a broken nose, body slammed relentlessly, bruised ribs and there went the dream!
Freddie vs The Deadman.