Tutoring any subject, definitions are important. The tutor shares a meaning of sport he recently discovered.
The term sport, referring to a physical game, is well understood. However, I encountered sport used in a horticultural context, so looked it up:
Mish, Frederick C (editor). The Merriam-Webster Dictionary. Springfield: Merriam-Webster, 2004.
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.