Keith Woolner (born c. 1968)[1] is an author for Baseball Prospectus and is the creator of the statistic Value Over Replacement Player (VORP).
[2] VORP is acknowledged by the sabermetrics community as one of the key concepts in the analysis of a player's performance and market valuation.
[citation needed] Woolner grew up in New Hampshire as a fan of the Boston Red Sox, later moving to Florida as a teenager.
According to Woolner, ...no matter how interesting the technology or how novel the application, it was hard to get truly passionate about helping another business improve their profitability or run more efficiently.
[3]In 1998, while still employed full-time in software development and management, Woolner became a regular contributor to a fledgling Baseball Prospectus, for whom he wrote both for the annual book and the website.