Wallace is a 5-foot-10 175-pound 3B/RHP with a large frame and a physical build. On the mound he uses a simple repeated delivery with a short quick arm action to command the strike zone on a consistent basis. His fastball works 82-84 mph with late run. As a position player he shows advanced feel as hitter. He starts from an athletic stance with a forward lean. He loads back, moving his hands down, before attacking the baseball with a line drive swing from a low hand slot. He has shown the ability to have raw power to pull side. Defensively he plays through the baseball with fluid actions, using a normal exchange a strong accurate arm, to deliver the baseball accurately across the infield.