Fernando Valenzuela limits Pittsburgh to three hits in 7 2/3 innings and Greg Vaughn hits the 100-RBI mark with a solo homer to lead the Padres to a 4 – 1 win. Vaughn, who had 95 RBIs with Milwaukee before being traded, is the first player to hit 100 ribbies in a season while playing in both leagues.

On August 9, 1996 — Fernando Valenzuela limits Pittsburgh to three hits in 7 2/3 innings and Greg Vaughn hits the 100-RBI mark with a solo homer to lead the Padres to a 4 – 1 win. Vaughn, who had 95 RBIs with Milwaukee before being traded, is the first player to hit 100 ribbies in a season while playing in both leagues.

Source:
Baseball Reference August 9
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game