The Mariners, who still have 20 games remaining in 2012, including a 4:05 p.m. contest Wednesday at Toronto, have announced their tentative 2013 regular-season schedule. The Mariners open April 1, 2013, at Oakland and will play their first Safeco Field contest Monday, April 8 against the Houston Astros, who will switch from the NL Central to the AL West.
Houston's move to the AL West will give the division five teams. The move also gives the American League and the National League 15 teams each, guaranteeing interleague match-ups every day of the 2013 season.
The Mariners will open 2013 on the road for the fifth consecutive season, and will play Oakland for the fourth straight year (this season, the Mariners and Athletics opened at the Tokyo Dome in Japan).
The season-opening home stand will include 10 games, including three vs. Houston, four vs. Texas and three vs. the Detroit Tigers.
The Mariners launch interleague play May 7-8 at Pittsburgh. The Mariners will be matched against the NL Central in 2013 and will play 20 interleague games over the course of five months, May through September.
Home interleague opponents include the San Diego Padres (two games May 27-28), the Pirates (two games June 25-26), the Cubs (three games, June 28-30) and the Milwaukee Brewers (three games, August 9-11).
The Brewers will make their first trip to Seattle as a member of the National League. The Brewers faced the Mariners in the Kingdome as members of the American League from 1977-1997.
Seattle will travel to San Diego, Cincinnati and St. Louis, in addition to Pittsburgh, for interleague contests.
The Yankees will make their only trip to Seattle for a four-game set June 6-9, while the Red Sox will play at Safeco Field for the only time July 8-11 in another four-game set. The Mariners will play three series at home, and three on the road, against each AL West rival (Houston, Los Angeles, Oakland and Texas).