▁spring ▁training . ▁He ▁began ▁the ▁season ▁with ▁Tri ple - A ▁Sc r anton . ▁He ▁was ▁called ▁up ▁by ▁the ▁Yan ke es ▁on ▁May ▁ 9 . ▁ ▁Tom ko ▁was ▁designated ▁for ▁assignment ▁on ▁July ▁ 2 1 , ▁ 2 0 0 9 , ▁to ▁make ▁room ▁on ▁the ▁ro ster ▁for ▁Ser gio ▁Mit re . ▁ ▁He ▁critic ized ▁the ▁Yan ke es ▁for ▁not ▁using ▁him ▁enough , ▁despite ▁his ▁excellent ▁spring ▁training ▁and ▁minor ▁league ▁numbers , ▁and ▁said ▁his ▁ 5 . 2 5 ▁E RA ▁was ▁due ▁to ▁a ▁lack ▁of ▁use . ▁He ▁was ▁released ▁on ▁July ▁ 2 9 . ▁ ▁Oak land ▁Athletics ▁He ▁then ▁signed ▁with ▁Oak land ▁Athletics . ▁On ▁August ▁ 1 7 , ▁ 2 0 0 9 , ▁Tom ko ▁defeated ▁the ▁Yan ke es ▁in ▁his ▁first ▁start ▁for ▁Oak land . ▁He ▁res igned ▁with ▁Oak land ▁during ▁the ▁ 2 0 0 9 - 2 0 1 0 ▁off season ▁and ▁re hab bed ▁with ▁the ▁Sac r amento ▁River ▁C ats . ▁ ▁Texas ▁R angers ▁On ▁February ▁ 1 9 , ▁ 2 0 1 1 , ▁the ▁Texas ▁R angers ▁signed ▁Tom ko ▁to ▁a ▁minor ▁league ▁contract ▁with ▁no ▁inv itation ▁to ▁spring ▁training . ▁On ▁April ▁ 2 0 , ▁the ▁R angers ▁purchased ▁his ▁contract ▁from ▁the ▁min ors ▁and ▁called ▁him ▁up . ▁He ▁was ▁out right ed ▁to ▁Tri ple - A ▁on