Eric Byrnes played in 10 games at left field for the Seattle Mariners in 2010, starting in 8 of them. He played for a total of 249 outs, equivalent to 9.22 9-inning games. He made 28 putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Rod Craig played in 4 games at left field for the Seattle Mariners in 1980, starting in 2 of them. He played for a total of 60 outs, equivalent to 2.22 9-inning games. He made no putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Mike Morse played in 11 games at left field for the Seattle Mariners in 2013, starting in 9 of them. He played for a total of 247 outs, equivalent to 9.15 9-inning games. He made 18 putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Michael Saunders played in 24 games at left field for the Seattle Mariners in 2013, starting in 12 of them. He played for a total of 372 outs, equivalent to 13.78 9-inning games. He made 22 putouts, had 2 assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Phil Bradley played in 48 games at left field for the Seattle Mariners in 1984, starting in 13 of them. He played for a total of 522 outs, equivalent to 19.33 9-inning games. He made 43 putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Eric Byrnes played in 10 games at left field for the Seattle Mariners in 2010, starting in 8 of them. He played for a total of 249 outs, equivalent to 9.22 9-inning games. He made 28 putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Greg Halman played in 4 games at left field for the Seattle Mariners in 2010, starting in 3 of them. He played for a total of 93 outs, equivalent to 3.44 9-inning games. He made 7 putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Milton Bradley played in 39 games at left field for the Seattle Mariners in 2010, starting in 38 of them. He played for a total of 970 outs, equivalent to 35.93 9-inning games. He made 87 putouts, had 3 assists, and committed one error, equivalent to .028 errors per 9-inning game. He had no double plays.
Ryan Langerhans played in 30 games at left field for the Seattle Mariners in 2010, starting in 24 of them. He played for a total of 681 outs, equivalent to 25.22 9-inning games. He made 56 putouts, had 4 assists, and committed one error, equivalent to .04 errors per 9-inning game. He had no double plays.
Michael Saunders played in 77 games at left field for the Seattle Mariners in 2010, starting in 74 of them. He played for a total of 1943 outs, equivalent to 71.96 9-inning games. He made 165 putouts, had 8 assists, and committed 4 errors, equivalent to .056 errors per 9-inning game. He had 4 double plays.
Matt Tuiasosopo played in 14 games at left field for the Seattle Mariners in 2010, starting in all of them. He played for a total of 366 outs, equivalent to 13.56 9-inning games. He made 21 putouts, had one assist, and committed one error, equivalent to .074 errors per 9-inning game. He had no double plays.
Mike Carp played in just one game at left field for the Seattle Mariners in 2010 and started. He played for a total of 12 outs, equivalent to .44 9-inning games. He made no putouts, had no assists, and committed no errors, equivalent to 0 errors per 9-inning game. He had no double plays.
Since the Seattle Mariners began operating in 1977 they have 114 outfielders listed on their all-time roster. How many played left field at one time or another would take a lot of research going through each daily box score of every game. It is safe to assume that many of the 114 played left field occasionally. Of course, the Mariners were not the first major league team in Seattle..an expansion team, the Seattle Pilots started MLB in Seattle and moved to Milwaukee in 1970 and became the Milwaukee Brewers.
Cole Gillespie is a left fielder for the Seattle Mariners.
Dustin Ackley is a left fielder for the Seattle Mariners.
Julio Morban is a left fielder for the Seattle Mariners.
Rafael Bournigal played in just one game at left field for the Seattle Mariners in 1999 and did not start. He made no putouts, had no assists, and committed no errors, equivalent to 0 errors per game (estimate based on total games played in). He had no double plays.