Tanaka makes wild-card case with gem as Yankees blank Mariners

SEATTLE — Masahiro Tanaka is the early favorite to start the AL wild-card game for the Yankees. Hours before Tanaka dominated the Mariners on the way to a 4-0 victory in front of 32,195 at Safeco Field on Friday night, Aaron Boone said the last 22 games of the regular season would determine who will…