Francis Dayle "Chick" Hearn was an American sportscaster who was the play-by-play announcer for the Los Angeles Lakers of the National Basketball Association for 41 years, as well as the team's assistant general manager for seven years beginning in 1972. Hearn is remembered for his rapid fire, staccato broadcasting style, associated with colorful phrases such as slam dunk, air ball, and no harm, no foul that have become common basketball vernacular. Hearn broadcast 3,338 consecutive Lakers games starting on November 21, 1965. Most of Hearn's games in the television era were simulcast on both radio and television, even after most teams chose to use different announcers for the different media.

A slam dunk, also simply known as dunk, is a type of basketball shot that is performed when a player jumps in the air, controls the ball above the horizontal plane of the rim, and scores by shoving the ball directly through the basket with one or both hands. It is a type of field goal that is worth two points. Such a shot was known as a "dunk shot" until the term "slam dunk" was coined by former Los Angeles Lakers announcer Chick Hearn.