The Porskoff Ploy is a Quidditch tactic named after Russian Chaser Petrova Porskoff. A Chaser flies straight upwards with the Quaffle in an attempt to make the opposing team's chasers follow him. Then, the Chaser with the Quaffle throws the ball directly down to a fellow Chaser below the opposing team's chasers. The move requires pinpoint timing on the part of the Chasers. Troy used the Porskoff Ploy against Ivanova during the 1994 Quidditch World Cup.