![This is a 2023 photo of Jonatan Clase of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image was](https://img.mlbstatic.com/mlb-images/image/upload/t_16x9/t_w1024/mlb/wpp1n9rqqwwtnmikrsvs)
2023 World Baseball Classic rosters
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Mariners open spring training complex to fans
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Active Roster Seattle Mariners
![This is a 2023 photo of Jonatan Clase of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image was](https://c8.alamy.com/comp/2PNFXMP/milwaukee-brewers-left-fielder-christian-yelich-loses-his-hat-while-trying-to-field-an-rbi-single-hit-by-seattle-mariners-designated-hitter-tommy-la-stella-during-the-third-inning-of-a-baseball-game-tuesday-april-18-2023-in-seattle-ap-photolindsey-wasson-2PNFXMP.jpg)
This is a 2023 photo of Tommy La Stella of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image
![This is a 2023 photo of Jonatan Clase of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image was](https://westcoastleague.com/wp-content/uploads/2023/08/Screenshot-2023-08-16-at-7.06.21-AM-e1692283922935.png)
News - West Coast League
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The Seattle Mariners are a team to watch for 2022 and beyond - Beyond the Box Score
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Mariners' 2023 Opening Day roster finalized
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Seattle Mariners' 2023 Regular Season Schedule - Fastball
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This is a 2023 photo of Tommy La Stella of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image
![This is a 2023 photo of Jonatan Clase of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image was](http://sports.mynorthwest.com/wp-content/uploads/2023/05/jp-crawford-arrow-getty-900.jpg)
Close look: 3 players have helped Seattle Mariners get into groove - Seattle Sports
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News - West Coast League
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Seattle Mariners 2023 MLB Roster - ESPN
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News - West Coast League
![This is a 2023 photo of Jonatan Clase of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image was](https://westcoastleague.com/wp-content/uploads/2023/08/DX2_8543-1568x1045.jpg)
News - West Coast League
![This is a 2023 photo of Jonatan Clase of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image was](https://c8.alamy.com/comp/2PXAJ9K/seattle-mariners-tommy-la-stella-plays-during-a-baseball-game-thursday-april-27-2023-in-philadelphia-ap-photomatt-slocum-2PXAJ9K.jpg)
This is a 2023 photo of Tommy La Stella of the Seattle Mariners baseball team. This image reflects the Seattle Mariners active roster as of Thursday, Feb. 23, 2023, when this image