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'''Chris "Ryback" Ratcliff''' (alias '''Ryback'''; born January 21, 1979) is an Australian Doomer and [[Speedrun|speedrunnerspeedrun]]ner.

As of November 2021Until 2017, he submitted over 290 [[demo]]s to the [[Compet-n]] database and over 1400 demos with a total duration of 161 hours to the [[Doom Speed Demo Archive]], ranking him fifth in demos count and fourth by duration. He is one of the most successful speedrunners who play with keyboard only.