The University of Hawaiʻi at Mānoa competes in NCAA Division I, the only Hawaiʻi school to do so. In baseball, it competes in the Western Athletic Conference.

The men’s team was formerly known as the Rainbow Warriors but in 2000, in response to complaints from the football program, the University of Hawaiʻi at Mānoa athletics program allowed each sport to select their own team names. The baseball team chose the Rainbows.

Les Murakami Stadium is the baseball stadium at the University of Hawaii in Honolulu Hawaii, United States. The stadium was built in 1984 and renamed after legendary Rainbow coach Les Murakami for the 2002 season.

In 1983, the University of Hawaii appropriated the money to build a state-of-the-art on-campus baseball facility. The project took less than nine months to complete. Along with renaming the stadium in 2002, the baseball program moved the outfield fences in 15 feet and lowered them from 12 to 10 feet, turning what had been a pitchers’ ballpark into a more hitter-friendly stadium.

Murakami, the first full-time head baseball coach in the program’s history, developed the program for 31 years and led the Rainbows to the 1980 College World Series, their only CWS appearance. Hawaii lost 5-3 in the championship game to Arizona.

Rainbow baseball was its most prosperous between 1989-94 for two big reasons. First, in 279 home dates, UH posted a 69.9 winning percentage and went 195-84 at home. Secondly, attendance flourished, drawing 983,261 fans for an average of 3,524. Les Murakami Stadium was sold out for 179 of those 279 dates.