Since the introduction of the unbalanced schedule and interleague play, the Red Sox and Mariners have only played each other a half dozen times or so over each of the last few years. Back in the 1970's, these teams faced off 10-12 times a year. The Red Sox trip to Seattle this weekend is their only trip. The Mariners will visit Fenway for a three game set in mid-August.
Looking at the players that have worn the uniform of both teams, there are a ton of players with memorable connections to one or both of these franchises. Larry Andersen played two seasons with the Mariners, but he is remembered far more often for being part of the infamous trade that sent Red Sox minor league prospect Jeff Bagwell to the Houston Astros in 1990. Andersen was great down the stretch for the 1990 Red Sox, but he left as a free agent at the end of the season, while Bagwell went on to hit 449 home runs while winning Rookie of the Year honors and picking up a NL MVP award along the way.
The Seattle Mariners have their own Bagwellian blunder, because they traded David Ortiz to the Twins in 1996 as part of a deal that sent Dave Hollins to the Mariners. Hollins played in just 28 games for the Mariners and left as a free agent. Everybody pokes fun at the Minnesota Twins for letting Big Papi walk, but nobody mentions the fact that Seattle had him to begin with!
Perhaps Big Papi will launch a few more home runs to remind the Mariners of the talent they gave up so easily almost 20 years ago.