The Mariners’ homestand against the San Francisco Giants just went up in smoke.

More specifically, the game originally scheduled for 6:40 p.m. at T-Mobile Park on Tuesday has been postponed because of poor air quality in the Seattle area, the team announced on Tuesday afternoon. The two-game series will instead be played in San Francisco, at 6:45 p.m. on Wednesday and 1:10 p.m. on Thursday.

According to the Air Now website — which uses government monitors for accurate air quality readings — the Air Quality Index for the area surrounding T-Mobile Park was 240 just prior to 2 p.m. on Tuesday. The AQI scale is measured between 0 and 500, with 0-50 being “good” and 200-300 registering as “very unhealthy.”

“Unfortunately, the air quality in Seattle has gotten worse overnight here at T-Mobile Park and it is not clearing at all today.  Forecasters expect it to clear late Thursday and into Friday morning,” Mariners president and chief operating officer Kevin Mather said in a statement. “As always, the health and safety of the players, and our staff is our first priority.

“To assure the games could be played, the best solution was to re-locate to the Bay Area. We appreciate the Giants willingness to work with us on this challenge, and we look forward to returning to T-Mobile Park on Friday to host the Padres.”

In a Zoom call with reporters on Tuesday afternoon, Giants manager Gabe Kapler added that “this was certainly a joint decision that we all felt was in the best interest of the players.”


An air quality alert for the Seattle area has been extended by the National Weather Service through noon on Thursday. The official alert states that “pollutants in smoke can cause burning eyes, aggravate heart and lung diseases, and aggravate other serious health problems. Clean Air Agencies recommend staying at home when possible, limiting outdoor activities, and following medical advice from health care professionals.”

As wildfires tear through parts of California, Oregon and Washington, a layer of smoke arrived in the Seattle area on Friday and has failed to dissipate in the days since. Despite the questionable conditions, the Mariners and A’s completed a doubleheader — with both games lasting seven innings — at T-Mobile Park on Monday.

After the first game, A’s starter Jesus Luzardo said that “I’m a healthy 22-year-old, I shouldn’t be gasping for air, or missing oxygen, when I’m getting to the line. So I’ll leave it at that.”

A’s reliever Jake Diekman also tweeted, “@MLB what’s the cut off for air quality?”

An MLB spokesperson confirmed there is not a set AQI index threshold where a game would have to be postponed, saying, “We advise clubs that they should speak with their local health departments and any other relevant local agencies for guidance on how to proceed.”

Mariners manager Scott Servais said after the conclusion of the doubleheader that none of his players were adversely affected by the conditions.


“It’s one of the reasons you know you got the roof on so you get some backdrop there and you can see the ball when it goes up in the air,” he said. “So no issues there. It’s certainly a little bit different than what you’re used to, but nobody had any problems.”

A day later, when asked if his players had expressed reservations about playing in Seattle, Kapler confirmed that “I think there was some concern — yeah, for sure. Everybody was reading the reports on the air quality and we all wanted to be safe and players were definitely expressing some concerns.”

Mariners reinstate reliever Brandon Brennan from IL

Prior to Tuesday’s postponement, the Mariners announced that reliever Brandon Brennan has been reinstated from the 45-day injured list. Seth Frankoff was also optioned to the alternate training site and Jimmy Yacabonis was designated for assignment.

Brennan, 29, was originally placed on the 10-day IL on July 27 with a strained left oblique. He was transferred to the 45-day IL on Aug. 1. The lanky righty had appeared in just one game this season, allowing one run on two hits with two walks in 1.1 innings against the Astros on July 25. He figures to bolster an undeniably unproven Seattle bullpen.

The 32-year-old Frankoff made two appearances with the Mariners this season and allowed five earned runs in 2.2 innings. He was selected from the alternate training site on Aug. 30 after being signed to a minor-league contract and added to the 60-man player pool on Aug. 11.

Yacabonis made a spot start in Monday’s 9-0 loss to the A’s in the second game of the doubleheader, surrendering one run on two hits and three walks in 1.1 bumpy innings. His center fielder, Kyle Lewis, also climbed the wall to snag a would-be grand slam that ended the first.

The 28-year-old Yacabonis went 0-1 with a 3.86 ERA (1 ER, 2.1 IP) in three appearances with the Mariners this season. He was promoted from Tacoma on Sept. 9 after being acquired from San Diego for cash considerations on Aug. 19 and assigned to the alternate training site.

Overall, Yacabonis is 3-5 with a 5.71 ERA (66 ER, 104.0 IP) in 57 career games with Baltimore (2017-19) and Seattle. He made his first major league start against the Mariners in 2018.