gamesmanship

(gāmzˈmən-shĭpˌ)

1. The art or practice of using tactical maneuvers to further one's aims or better one's position: “a sometimes wry, sometimes savage look at the players, political gamesmanship, turf battles and outright chaos that permeated Washington” (David M. Alpern).
2. The use in a sport or game of aggressive, often dubious tactics, such as psychological intimidation or disruption of concentration, to gain an advantage over one's opponent.