We're introducing some of the Mariners' offseason additions during spring training. Here's a personal look at Nathan Karns.
• Position: Starting right-handed pitcher
• Height/weight/age: 6-3/225/28
• Hometown: Arlington, Texas
• How acquired: Via trade along with two minor-leaguers from Tampa Bay for Brad Miller, Danny Farquhar and Logan Morrison.
Favorite cartoon growing up: "X-Men," though he liked just about everything of the superhero genre. "The X-Men, Superman, Batman, I couldn't get enough of it. The superhero, comic book type of cartoons, that's what I was into.