Nick Noonan was optioned to Triple-A Fresno to make room on the roster.
Kickham and Noonan are the only Giants players to make their Major League debuts this year.
Kickham, who is ranked as the third-best Giants prospect, was selected by San Francisco in the sixth round of the 2010 First-Year Player Draft.
Rick Eymer is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.