A 4-point play in basketball is a scenario where four points are scored on a single basket. This can only happen if a player is fouled while attempting a three-pointer and then makes the subsequent foul shot. Most 4-point play opportunities are converted since professional basketball players shoot above 50% from the free throw line, but many times the free throw is missed.
While less common, another way of earning a 4-point play technically speaking would be to draw a technical or flagrant foul after making a two point shot and then making both free throws to accumulate four points in one possession.
A 4-point play was impossible in the National Basketball Association up until 1979, when the 3-point line was introduced. 3-point plays were common, as players would sometimes get fouled on layup or jumper attempts and convert the free throw attempt, but the 4-point variety was non-existent.
Jamal Crawford is the all time leading 4-point play scorer with 60 such occurrences, while James Harden is in second.
Due to the rarity of the play, the most impressive feat is perhaps James Jones completing two 4-point plays in a span of only 11 seconds in 2009.