The Seattle Mariners 2021 season is scheduled to begin on Thursday, April 1, when the San Francisco Giants come to T-Mobile Park, according to the tentative schedule announced today by Major League Baseball.

The six-game Opening Homestand features three games against the Giants (April 1-3), a rare Sunday off day, and a three-game series against the Chicago White Sox (April 5-7).

Interleague Matchups

In addition to the Giants, the month of April brings a second National League West team to T-Mobile Park with a two-game series against the Los Angeles Dodgers April 19-20. All the N.L. West teams except the San Diego Padres will be in Seattle next season for Interleague play.

The Mariners will host the Colorado Rockies June 22-23, and the Arizona Diamondbacks will travel to Seattle September 10-12.

The Mariners will travel to Los Angeles to play the Dodgers May 11-12, to San Diego for the only meeting with the Padres on May 21-23, to Denver to play the Rockies July 20-21, and to Arizona September 3-5 for a three-game set against the Diamondbacks.

Other schedule highlights of note:

• The Mariners will travel to Boston for four games against the Red Sox April 22-25. The Red Sox will be in Seattle for a three-game series September 13-15.
• The New York Yankees will be at T-Mobile Park July 6-8. The Mariners will meet the Yankees in New York August 5-8.
• The Mariners will be home on Memorial Day, May 31, to meet the Oakland Athletics, and on Sunday July 4, hosting the Texas Rangers.
• The season will conclude with a six-game homestand against the A’s, September 27-29, and three against the Los Angeles Angels October 1-3.

The full 2021 Mariners tentative schedule is available now on Mariners.com. The complete 2021 MLB tentative schedule of all 30 teams is available on MLB.com.

Start times for home and road games will be released at a later date.

The schedule is subject to change until it becomes official in January 2021.