Walker (foot) will make his scheduled start Sunday against the Red Sox, Bob Dutton of the Tacoma News Tribune reports.
The club initially feared the injury was related to the Achilles tendon, but it appears Walker was able to avoid anything overly serious. The ailment was ultimately found to be related to a tendon in the arch of his foot so it's always possible something acts up in the remainder of the week, but for now it appears he'll be good to go Sunday.