Hustling is the deceptive act of disguising one's skill in a sport or game with the intent of luring someone of probably lesser skill into gambling (or gambling for higher than current stakes) with the hustler, as a form of both a confidence trick and match fixing.
It is most commonly associated with, and originated in pocket billiards (pool), but also can be performed with regard to other sports and gambling activities.
The engendered doubt and uncertainty is what allows hustling to succeed, with the "faults" being dropped when a significant amount of money is at stake.
In Damon Runyon's short stories "Dream Street Rose" (More Than Somewhat, 1937) and "Madame La Gimp" (Furthermore, 1938), the fictional characters Frank and Judge Henry G. Blake respectively are pool hustlers.
Additionally, the main characters of the TV series Supernatural, Dean and Sam Winchester, are also pool hustlers as one of their sources of income (various episodes, 2005–2020).