Cliff Lee will finally make his pitching debut for the Mariners on Friday when they host the Rangers. The left-hander threw six shutout innings during a rehab start for Triple-A Tacoma on Sunday. He is working his way back to the mound after straining his abdomen during spring training. "I felt strong the whole time," Lee said. "It's really more of a precautionary-type deal to ease back into it but physically, I feel like I could keep going, for sure. "Still, it's better safe than sorry."