Remember these events?
Philip Humber Perfect Game April 21st - The Mariners were on the losing end of the 21st Perfect Game in MLB history. The Chicago White Sox won 4-0.
Ichiro Suzuki Traded to the NY Yankees July 23rd - Just over a month of getting his 2,500th MLB hit, arguably the best player in Seattle Mariners history was traded to the New York Yankees. As of this post, Ichiro has 2,595 MLB hits. When you add his 1,278 career hits collected during nine seasons in Japan, that brings his hit total to 3,873. Only Ty Cobb and Pete Rose have more hits on any major league level.
Felix Hernandez Perfect Game August 15th - King Felix threw the 23rd perfect game in MLB history as the Mariners beat the Tampa Bay Rays 1-0. This is the first time that one team has been involved in two perfect games in one season.
Los Angeles Angels 20 Strikeouts Game September 25th - Zack Greinke strikes 13 Mariners in just five innings. The Angels bullpen strikes out another seven. This was the fourth time in MLB history that a team struck out 20 batters. Angels won 5-4.
So for better or for worse, the 2012 Seattle Mariners made plenty of history.