Rich Rieker
Richard Gregory Rieker (born November 9, 1961) is the Director of Umpire Development for Major League Baseball and a former professional baseball umpire. He debuted as a National League umpire in 1992, was on the full-time NL umpiring staff from 1996 to 1999 and worked throughout both major leagues in 2000 and 2001. Rieker wore uniform number 16 during his National League career, then switched to number 38 after the NL and AL umpiring staffs merged in 2000. Rieker umpired 1,001 regular season major league games in his 10 year career. He umpired in two division series (1999 and 2000), and the 1998 All-Star Game.