Still , at just 23 , there 's clearly upside here .
With Zack Wheeler ( elbow ) expected to start the season in extended spring training , Gsellman has a chance to cement his place in the rotation .
Still , at just 23 , there 's clearly upside here , and with Zack Wheeler ( elbow ) expected to start the season in extended spring training , Gsellman has a chance to cement his place in the rotation .