#15 The Deadman puts his career on the line
At the Royal Rumble match in 2017, it seemed as if The Undertaker, participating for the first time in years, was a shoo in for the victory and a Wrestlemania main event spot.
When he came out at number 29, fans were ecstatic, especially when he eliminated The Miz, Baron Corbin, and Sami Zayn in short order. However, the Dead Man would fall to the Big Dog when Roman Reigns came out at number 30.
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The Undertaker would seek his revenge by choke slamming Reigns the next night on RAW. This set up a match between the two at Wrestlemania XXXIII, with The Undertaker's career on the line for added drama.
The Big Dog won the match, 'retiring' The Undertaker. Post match, Taker took off his hat, gloves, and jacket, and left them in the ring. It looked like the The Undertaker was gone for good...but in the world of pro wrestling, you can never say never.