[1] In 1973, Weinhauer was hired at University of Pennsylvania as an assistant on the staff to head coach Chuck Daly.
Weinhauer received a personal reprimand from the university for allowing an ineligible player to practice with the team.
On April 29, 1994 (the first day of the 1994 NBA playoffs), he was hired by the Houston Rockets to be vice president of operations.
It was Weimhauer who served as general mamager of the Rockets in their two runs to the NBA Finals, which included a 1995 trade on Valentine's Day of Otis Thorpe, the righta to Marcelo Nicola (drafted in 1993 but never played a game in the NBA) and a 1995 1st round draft pick to the Portland Trail Blazers for Clyde Drexler (who had wanted a trade) and Tracy Murray.
[7][8] On August 30, 1996, He left the Rockets to be an assistant on the coaching staff of Chris Ford with the Milwaukee Bucks.
In the 1998–99 season, under first-year hire George Karl as coach, the Bucks made the playoffs for the first time in eight years.
However, a perception that they failed to make a move in free agency to help the roster led to Weinhauer (who had an expiring contract) being fired on August 11, 1999.