PEORIA, Ariz. -- The Mariners broke camp on Thursday and traveled to Albuquerque for a two-game series against the Rockies, but left-hander Garrett Olson remained in Arizona.
He was sent to the Minor Leagues Thursday morning.
A finger injury suffered during PFP (pitcher's fielding practice) limited Olson's workload to 3 1/3 innings this spring. He surrendered eight earned runs, which calculates to a 21.60 ERA.
"I didn't get to pitch much, and when I did, I wasn't dazzling," he said. "You know, I certainly didn't deserve to make this team out of Spring Training."
Olson reported to Triple-A Tacoma on Thursday to start his pursuit of getting back to the Major Leagues.
"The injury set me back, but I got to pitch in an intrasquad game and I was pleased," he said. "I have been working on a few things with [pitching coach Rick Adair], and I feel like I am a better pitcher now than coming into Spring Training or even last season."
The one-inning stint (three earned runs) was the first time he had faced hitters since March 13.
Olson, acquired from the Cubs for pitcher Aaron Heilman on Jan. 28, 2009, appeared in 31 games, including 11 starts, with the Mariners last season, posting a 3-5 record and 5.60 ERA. He also made nine starts for Tacoma, going 2-3 with a 4.94 ERA.
His departure leaves 31 players in camp. The roster must be reduced to 25 players on Sunday and look for the roster to include non-roster invitee Mike Sweeney, all-purpose reserve Matt Tuiasosopo and Rule 5 Draft selection Kanekoa Texeira.