Right-hander Yu Darvish's stiff neck improved significantly between Tuesday and Wednesday, manager Ron Washington said. It could mean a return to the mound before his next scheduled start on Sunday. Washington said the current plan is still for Darvish to take his next start on Sunday, essentially skipping a turn in the rotation. Darvish woke up Tuesday, his scheduled day to pitch, with a stiff neck and was unable to get loose. He was scratched and replaced by right-hander Scott Feldman.