Groome was optioned to Triple-A El Paso by the Padres on Monday.
Groome showed some flashes of brilliance in Arizona during the Cactus League with a 1.29 ERA, but he also registered a 13:10 K:BB which showed that the command still has some work to be done. The 2016 first-round pick could be an option for San Diego before the end of the year.