According to The Wrestling Observer, the reason why something seemed very off about The Undertaker vs Brock Lesnar match at WrestleMania 30 is because Undertaker is being described as having no idea what they were doing in the ring, and had to rely on Lesnar to carry the match.
This is a result of Undertaker suffering a concussion during the match, and while it remains unclear exactly when 'Taker suffered the injury, it's believed to have happened during the single leg takedown maneuver.
With regards to The Undertaker's future, it was of course very heavily discussed backstage at WrestleMania and Raw last night, and while it's unknown at this time whether or not 'Taker's last WWE match was at 'Mania 30, it certainly has been something people are believing to be the case.
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