KC Royals: Kris Bubic is building a case against himself

(Mandatory Credit: Jay Biggerstaff-USA TODAY Sports)

Does a rough spring spell trouble for KC Royals sophomore pitcher Kris Bubic?

That five-man KC Royals starting rotation billed all winter as “set” may not be so established after all. Kris Bubic, the most vulnerable to losing a spot, continues to jeopardize his standing with only two weeks left until Opening Day.

Thursday, the lefty who made the jump from High-A ball to the majors last season displayed little of what it will take to stay in the rotation with Brad Keller, Danny Duffy, Brady Singer and Mike Minor. Bubic, just 22, gave up three runs on five hits (including two doubles) in 2.1 innings, an effort that pushed his already-troubling…