In Tetris, a game named for the Greek word for 4, every shape in the game is formed of 4 blocks each. 4 represents the number of Justices on the Supreme Court of the United States necessary to grant a writ of certiorari (i.e., agree to hear a case; it is one less than the number necessary to render a majority decision) at the courts current size. Number Four is a character in the book series Lorien Legacies. In the performing arts, the fourth wall is an imaginary barrier which separates the audience from the performers, and is "broken" when performers communicate directly to the audience. In music
In written music, common time is constructed of four beats per measure and a quarter note receives one beat. In popular or modern music, the most common time signature is also founded on four beats, i.e., 4/4 having four quarter note beats. The common major scale is built on two sets of four notes (e.g., CDEF, GABC), where the first and last notes create an octave interval (a pair-of-four relationship). The interval of a perfect fourth is a foundational element of many genres of music, represented in music theory as the tonic and subdominant relationship. Four is also embodied within the circle of fifths (also known as circle of fourths), which reveals the interval of four in more active harmonic contexts. The typical number of movements in a symphony. The number of completed, numbered symphonies by Johannes Brahms.
In baseball:
There are four bases in the game: first base, second base, third base, and home plate; to score a run, an offensive player must complete, in the sequence shown, a circuit of those four bases. When a batter receives four pitches that the umpire declares to be "balls" in a single at-bat, a base on balls, informally known as a "walk", is awarded, with the batter sent to first base. For scoring, number 4 is assigned to the second baseman. Four is the most runs that can be scored on any single at bat, whereby all three baserunners and the batter score (the most common being via a grand slam). The fourth batter in the batting lineup is called the cleanup hitter. In basketball, the number four is used to designate the power forward position, often referred to as "the four spot" or "the four". In cricket, a four is a specific type of scoring event, whereby the ball crosses the boundary after touching the ground at least one time, scoring four runs. Taking four wickets in four consecutive balls is typically referred to as a double hat trick (two consecutive, overlapping hat tricks). In American Football teams get four downs to reach the line of gain. In rowing, a four refers to a boat for four rowers, with or without coxswain. In rowing nomenclature, 4− represents a coxless four and 4+ represents a coxed four. In rugby league:
A try is worth 4 points. One of the two starting centres wears the jersey number 4.