This is a simple question but can really take some thought.
I will make it easier by saying out of all the matches in the last 10 YEARS (2006-2016) which one win/loss would you have changed?
For me, it would be Brock ending the streak. I think his streak should have ended when he was going to retire. Brock did not need the heat of beating him at all. Undertaker losing would have meant so much more as well if when he lost, it was done and he was done for good.