Brian Kelly Dayett (born January 22, 1957) is an American former Major League Baseball outfielder who played five seasons between 1983 and 1987 for the New York Yankees and Chicago Cubs.

[3] He propelled Nashville to win the Southern League championship with a two-out, bottom-of-the-thirteenth-inning walk-off home run scoring Buck Showalter.

[1] Dayett made his major league debut at Yankee Stadium on September 11, 1983, at the age of 26, appearing as a pinch hitter for Omar Moreno.

[1][3] He was traded along with Ray Fontenot from the Yankees to the Chicago Cubs for Henry Cotto, Ron Hassey, Rich Bordi and Porfi Altamirano at the Winter Meetings on December 4, 1984.

[12] On the minor league side, he played 870 games with a batting average of .280 and hit 141 home runs and 175 doubles.

[3] Dayett began a coaching career in 1997, managing the Will County Cheetahs of the independent Heartland League.

[1][13] He managed the same club, renamed the Cook County Cheetahs, in 1998,[14] and led them to win the league's championship.

[16] In 2002, Dayett served as hitting coach for the Michigan Battle Cats, the Class A affiliate of the Houston Astros in the Midwest League.

[18] He coached Houston's hitters in the South Atlantic League (SAL) with the Class A Lexington Legends in 2004.

[17] He joined the Texas Rangers organization in 2005, serving as hitting coach for the Midwest League's Class A Clinton LumberKings though 2008.