3. The Undertaker
Undertaker's going to return at some point - we all know this - but now that details have emerged of his WrestleMania opponent, a return at Fastlane would likely be a solo appearance to call out his foe. In case you missed the news, Wrestling Observer Newsletter have reported that 'Taker's opponent is a wrestler not on WWE's current roster. That's obviously a very vague statement. Does 'roster' refer to NXT as well, or inactive superstars? Regardless, any Undertaker appearance at Fastlane will likely be teaser-material only, perhaps involving a slow stalk to the ring and an ominous point at a logo on the Tron. It won't stop us from getting excited, though.