Originally published on ProWrestlingSheet.

The Undertaker is letting the smoke clear on his legacy and looking back at some of the more bitter moments of his career, including the WrestleMania 33 main event against Roman Reigns.

In an interview with ESPN, Taker aka Mark Calaway reflects on that fateful evening in Orlando, saying he had "no business being in the ring" that night.

As you'll recall ... The Undertaker left his gloves, hat and coat in the center of the ring after being defeated by Reigns at the event. At the time, it appeared that he was symbolically announcing his retirement. Now, we know that wasn't the case.

As part of the new, five-part limited series "The Last Ride," The Undertaker, with a legendary career spanning the course of over three decades, was forced to look back at some of his matches for the first time. The 'Mania 33 main event was difficult. "That was the first time that I watched that match back," he said. "I was so disgusted with it that I didn't want to watch it back."

While 'Taker places the blame squarely on himself, the shame he felt was transferred to his opponent. "I was so disappointed for Roman," he said. "Even after Brock Lesnar beat the streak, for guys to be coming up to have a match against The Undertaker at WrestleMania - especially where Roman was at - it was important for his career. Especially because he was going over. For me, in that role, I wanted to do the very best I could for Roman. I think the world of him."

As The Undertaker tells it now, it wasn't for a lack of effort. "I could have mailed it in. Protected myself. Only done a couple of things that I knew I could do. But that's just not the way I work. And it wouldn't have been fair to him," he said. "So I just tried to do the best I could. The harder I tried, the more I did - at least in my perception - it was not a good night. It was really disappointing."

"The Last Ride," documenting the last few years of The Phenom's career and seemingly culminating with his Boneyard Match against AJ Styles at WrestleMania 36, premieres this Sunday immediately following Money in the Bank on the WWE Network.

Subsequent episodes will be made available on demand the next four Sundays beginning at 10 AM.