Kershaw throws his FB about 66% of the time, but he has 3 other pitches that all have positive value. Lincecum's slider and change are actually his best pitches.
David Price, on the other hand, throws the heater a lot and it's his best pitch, but even he has been using his change a lot more. Source for all of this is fangraphs.
No matter what your name is or how good your FB is, you can't get away with one plus pitch as a MLB starter. I hope Bard spends his time getting those other pitches together, even if means he gets rocked a few times in ST.