(Photo credit: Bill Streicher-Imagn Images)It's been nearly two weeks since the Seattle Mariners lost back-to-back games. They'll try to keep that from happening again by winning their fourth straight series Thursday afternoon, this one against the host Kansas City Royals, who have gone nearly two weeks without winning consecutive contests. Seattle (83-69) had its 10-game winning streak snapped Wednesday in a 7-5 loss to Kansas City. In his career against the Mariners, Kolek has two appearances (one start) and is 0-1 with a 7.11 ERA. Castillo is 2-2 with a 3.98 ERA in seven career starts against the Royals.