Grays sports almanac complete sports statistics 1950 2000 also known as grays sports almanac novelization was a compilation of sports statistics and scores that was sold at the blast from the past antique memorabilia store in downtown hill valley in 2015. The grays sports almanac complete sports statistics 1950 2000 also known as grays sports almanac is a sports book that contain every sporting event in between years 1950 and 2000 that plays a big role in the sci fi comedy movie sequel back to the future part ii the almanac was used by old biff so he could alter the timeline so his younger