"I think we're going into (spring training) with Bruce having one of the five spots, I'm going into it with the mindset that you can't evaluate Bruce in spring training. He's not one of those kind of guys that can go in and compete because he's not a spring training pitcher. But once the bell rings, he's been phenomenal for us. He's been as consistent as anyone can be. You know what you're getting with Bruce. You're going to get six or seven really solid innings and he's going to keep you in the game. Unless something really dramatically happens between now and then, Bruce will probably have one of those five spots."Ned Yost as quoted by Jeffrey Flanagan.
For reference, the Ned quote when Mendoza beat out Chen for the 5th spot from the 3/26/2013 KC Star:
"Mendy had a better spring, He’s a better guy right now. The reason for that is Bruce, like most veteran players, has been a little slow to get it going in spring training. Starting the season, we wanted to put the guys out there who were doing the best in spring training. I’m not saying that won’t change somewhere down the road because the more we get deeper into it, who knows what is going to happen? But that’s where we’re starting"
You can't evaluate Bruce in Spring Training except when you can.