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ACTA Authors

John Dewan
Authors Name: John Dewan
Current Home: Chicago, IL


Thirty years ago, just five years after receiving his Fellowship in the Society of Actuaries, John Dewan left a highly successful career as an insurance actuary to pursue a life-long dream, the development of the most timely and comprehensive computer database in sports.  The fulfillment of that dream was Sports Team Analysis and Tracking Systems, Inc., or STATS, Inc. During John’s time as President and CEO,  STATS grew rapidly and was recognized in Inc. Magazine’s  Inc. 500, a list of America’s 500 Fastest-Growing Private Companies, ranking #144.  In recognition of his leadership role in making real-time sports information available to consumers, John was named to the Crain’s Chicago Business list of key technology players in Chicago and was a three-time finalist for the KPMG Illinois High Tech Awards. The success of the company culminated in its sale to News Digital Media, an affiliate of Rupert Murdoch’s News Corporation and Fox Broadcasting.
John’s present company is Baseball Info Solutions (BIS).  BIS is totally focused on baseball and collects, analyzes, and disseminates the most in-depth data in the industry, with more than two dozen Major League Baseball teams as clients. He is a regular guest on The Score, a sports talk radio station in Chicago, and has been interviewed by scores of publications and media outlets.
John’s latest books, The Fielding Bible: Volumes I-IV, have broken new ground in an area that has been the least analyzed in baseball: defense.  His Plus/Minus System and Defensive Runs Saved developed in the books are a direct application of actuarial and sabermetric techniques and have been widely accepted in the sabermetric world.
John’s slants on analytics in baseball can be seen regularly at, a free subscription service, and on Bill James Online, a $3-a-month subscription website, where he is a founder and key contributor.
John graduated from Loyola University of Chicago, with a B.S. in Mathematics and Computer Science.