In the midst of the wild card race in the American League, the Seattle Mariners determined they don't have the time to wait for Taijuan Walker to rediscover the potential he showed earlier in the season. The Mariners optioned the struggling Walker to Triple-A Tacoma on Monday, a surprising move that the club hopes will jump start his sluggish performances on the mound. Walker was the corresponding move made when Seattle activated recently acquired reliever Arquimedes Caminero. More...