National Labor Relations Board (NLRB). Meanwhile, a more hands-on approach was taken by former Arizona Diamondbacks pitcher Curt Schilling; Schilling used a bat to smash one of QuesTec's field cameras after being told by an umpire that he wanted to call some of his pitches strikes, but QuesTec made him call them balls, an act that led to a fine for the pitcher. The NLRB grievance was dropped by the WUA as part of the contract negotiations with MLB after the 2005 season, ending the legal challenges to the system. As the UIS controversy died down and the statistics accumulated, it became clear that the UIS was accomplishing its basic goals of narrowing the strike zone closer to the width of the plate and returning both lower and higher strikes that were typically not called before the system was introduced. In addition, the claims that the system would "ruin the game" have not been fulfilled, as both pitching and hitting statistics in "QuesTec ballparks" have been consistent with comparable statistics for non-QuesTec parks, and players have adapted to the changes brought by the system. As of the end of the 2008 season, the system had analyzed more than 4,800 games. The company appears to have ceased operations and is no longer listed on the OTC stock exchange. QuesTec stadiums Angel Stadium of Anaheim – Los Angeles Angels of Anaheim Chase Field – Arizona Diamondbacks Fenway Park – Boston Red Sox Progressive Field – Cleveland Indians Oakland–Alameda County Coliseum – Oakland Athletics Miller Park – Milwaukee Brewers Minute Maid Park – Houston Astros Shea Stadium – New York Mets (now defunct) Tropicana Field – Tampa Bay Rays U.S. Cellular Field – Chicago White Sox Yankee Stadium – New York Yankees (now defunct) See also PITCHf/x – the pitch tracking system used by MLB Advanced Media from 2007 to 2016 TrackMan – the pitch tracking system used in MLB's Statcast system since 2017 References External links Official site Baseball statistics Sports television technology