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From Replay review in gridiron football: The National Football League first adopted a limited Instant Replay system in 1986 More details on this can be found at e.g. Bleacher Report.


Cricket adopted the "Third Umpire" in Test Matches in 1992. The Third Umpire was an individual who reviewed a video replay of a line decision (Run Out, Stumped or Boundary). In later years, catches were also reviewed. This Umpire was only invoked if one of the two on-pitch umpires called for a review.

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