50
#50 Bryce Miller (2024), Bryan Woo (2025) and Félix Hernández (2014) are the only pitchers in team history with a sub-3.00 ERA and sub-1.00 WHIP season. #Mariners50
49
Cal Raleigh hit 49 of his 60 home runs in 2025 as a catcher, setting an MLB record for most home runs in a season while catching. #Mariners50
48
Randy Johnson recorded 12+ strikeouts in a game 48 times in a Mariners uniform, a franchise record. The Big Unit recorded 101 games with 12+ strikeouts, the most in MLB history. #Mariners50
47
Alvin Davis reached base safely in 47 consecutive games to begin his career, the longest on-base streak in Mariners history. The streak by "Mr. Mariner" is also the longest to begin a player's career in MLB history. #Mariners50
46
The Mariners will honor the legacy of the 1946 Seattle Steelheads by wearing replica uniforms for Sunday home games this season. The ‘46 Steelheads played in the West Coast Negro Baseball League. #Mariners50
45
Kazuhiro Sasaki tallied a career-high 45 saves in 2001, the single-season record for a Japanese-born pitcher. Sasaki was a 2-time All-Star and won 2000 AL Rookie of the Year. #Mariners50
44
#44 Julio Rodríguez became the 44th player in Major League history with a 30+ home run, 30+ stolen base season when he went 30/30 in 2023. Julio has compiled two 30/30 seasons in his first 4 seasons and is the only player in MLB history with 110+ homers and 110+ steals in a player's first 4 seasons.
43
Gaylord Perry was 43 years old when he recorded his 300th career win for the Mariners on May 6, 1982 against the Yankees at the Kingdome. #Mariners50
42
Ken Griffey Jr. helped pioneer "Jackie Robinson Day" when he wore #42 to honor Robinson on April 15, 1997. The number 42 was retired across MLB that year. #Mariners50
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