The Mariners are opening their first playoff series since 2001.  Seattle takes on the Blue Jays this afternoon in Toronto. The Mariners finished the season 90-72 and secured the second American League Wild Card.  The Blue Jays finished just ahead of them with a 92-70 record.  

Elsewhere in the American League, the Rays challenge the Guardians. In the National League playoffs, the Cardinals host the Phillies, and the Mets welcome the Padres.