John Armentrout has been associated with Babe Ruth League, Inc. for more than 34 consecutive years, holding volunteer leadership positions at the local league, District, State, and Regional levels.

He started in 1988 as a T-Ball manager with the Greater Manassas Baseball League (GMBL), located in northern Virginia.  John climbed the baseball age-group ladder as a manager all the way through the Babe Ruth 16-18 Division.  Many of those seasons included serving as a tournament team manager.  Along the way, John coached in several other youth sports organizations, including the Prince William Basketball Association, American Legion Baseball, Prince William County Fall Extended High School Baseball League, and the collegiate Summer Wood Bat Industrial Baseball League.  John retains the ownership and registration rights to the Virginia Eagles Baseball Club.  From 1989 until 1996 John was a Special Projects/Logistics Coordinator for the annually held National Quarterback Club Awards Banquet; also served at the local Washington Quarterback Club level providing Redskins players for its bi-weekly luncheons.

John's administrative career began when he was elected to the GMBL Board and appointed to the position of T-Ball Commissioner in 1990.  By the end of 1996, John had held many positions in GMBL, including Vice President and President.

In October 1996, John was appointed Assistant District 8 Commissioner.  When the District 8 Commissioner, Don Rose, Sr., was elected as the Virginia State Commissioner in the fall of 2003, John was elected to replace Don as the District 8 Commissioner.

John served as District 8 Commissioner until he was appointed to the newly established position of Assistant State Commissioner, Training & Compliance in October 2004 (and elected to the position the following year).  In October 2011, Babe Ruth League Southeast Regional Commissioner (at the time, Henry Sermons) appointed him Assistant Commissioner, Operations, the position that he currently holds.

John has pioneered the use of Web-based technology in Babe Ruth League, starting at the local league level, then establishing the first Babe Ruth Leagues of Virginia website in 1999, and now being Webmaster for the Southeast Region, Southwest Region, and Midwest Plains Region maintaining most of the State websites in the Southeast Region.  Downloadable manuals and forms, the Manager's Tournament Information Package (MTIP), and online brackets featuring instant access to tournament score updates are a few of the many innovative time- and cost-saving online features that he has introduced.

In 2021 John was inducted into the Southeast Region Hall of Fame.