5 Best Pitchers in Seattle Mariners History

5 Best Pitchers in Seattle Mariners History. The Seattle Mariners certainly don’t have the longest history for teams in Major League Baseball, but they have had a fascinating one. Over the years, the Mariners have had some memorable players that include Alex Rodriguez, Edgar Martinez, and, of course, Ken Griffey Jr. They’ve also had a lot of great players on the mound.