.372, Ichiro Suzuki (2004) Most Runs: 141, Alex Rodriguez (1996) Most Hits: 262, Ichiro Suzuki (2004) (Major League Record) Highest Slugging %: .674, Ken Griffey Jr. (1994) Highest On-Base %: .479, Edgar Martínez (1995) Highest On-Base Plus Slugging: 1.107, Edgar Martínez (1995) Most Doubles: 54, Alex Rodriguez (1996) Most Triples: 12, Ichiro Suzuki (2005) Most Home Runs: 56, Ken Griffey Jr. (1997, 1998) Most Grand Slams: 4, Edgar Martínez (2000) Most RBIs: 147, Ken Griffey Jr. (1997) Most Stolen Bases: 60, Harold Reynolds (1987) Most Wins: 21, Jamie Moyer (2003) Lowest ERA: 2.14, Félix Hernández (2014) Most Strikeouts: 308, Randy Johnson (1993) Most Complete Games: 14, Mike Moore (1985) and Mark Langston (1987) Most Saves: 57, Edwin Diaz (2018) Career records Most Home Runs: 417, Ken Griffey Jr. Most RBIs: 1261, Edgar Martínez Most Runs: 1219, Edgar Martínez Most Walks: 1283, Edgar Martínez Most Hits: 2542, Ichiro Suzuki Most Stolen Bases: 438, Ichiro Suzuki Highest Average: .322, Ichiro Suzuki Highest Slugging %: .561, Alex Rodriguez Highest On Base %: .418, Edgar Martínez Highest OPS: .934, Alex Rodriguez Most Games Played: 2055, Edgar Martínez Lowest ERA: 3.01, Tom Wilhelmsen Lowest WHIP: 1.14, Hisashi Iwakuma Most Innings Pitched: 2658, Félix Hernández Most Wins: 168, Félix Hernández Most Strikeouts: 2467, Félix Hernández Most Saves: 129, Kazuhiro Sasaki See also 1977 Major League Baseball expansion 1995 American League West tie-breaker game 2001 Major League Baseball All-Star Game The Double (Seattle Mariners) Rick Kaminski Edward "Tuba Man" McMichael Seattle Rainiers Sports in Seattle Footnotes External links Baseball teams established in 1977 1977 establishments in Washington (state) Major League Baseball teams Cactus League Baseball in Seattle