The Seattle Mariners are having roster issues as they already have a full 40 man roster. A Major League source close to Ken Rosenthal of FOXSports says that left-handed pitcher Garrett Olson has already been placed on waivers.

In 2010, the lefty was 0-3 with a 4.54 ERA and 31 SO in 37.2 innings throughout 35 games with the Mariners.

Rosenthal adds that there are at least five non-roster players that stand reasonable chances on making the team. The Mariners had 23 non-roster invitees this Spring Training. Catcher Josh Bard, infielder Adam Kennedy, right handed pitchers Jamey Wright and Chris Ray and one of two outfielders, Ryan Langerhans or Gabe Gross are among the favorites to make the team.