The Mariners completed the deal by sending Mike Campbell to the Expos on July 31 .
May 25 , 1989 : Mark Langston and a player to be named later were traded by the Mariners to the Montreal Expos for Randy Johnson , Brian Holman , and Gene Harris .
The Mariners completed the deal by sending Mike Campbell to the Montreal Expos on July 31 .
May 25 , 1989 : Mark Langston and a player to be named later were traded by the Mariners to the Montreal Expos for Randy Johnson , Brian Holman , and Gene Harris .