[3] Washington State joined the Northwest Conference in 1910; prior to the 1912–1913 academic year, former head football coach John R. Bender returned to Pullman from Saint Louis University.

He also served as the school's head baseball coach beginning with the 1913 season, in which the team won its first Northwest Conference title and finished at 7–1.

[3] After the 1915 season, Bender left to coach football at Kansas State and was replaced by Fred Bohler, who led the team to Northwest Conference titles in 1916 and 1918.

[3] In 1932, Art McLarney debuted for the New York Giants on August 23 and became the program's first alumnus to play in the major leagues.

[13] The last two teams remaining and both with one loss, the Cougars and Longhorns met again three days later in the national championship game,[14] which Texas won 3–0.

At the CWS in Omaha, the Cougars were eliminated without a win after consecutive defeats to Bradley and New Hampshire,[3][16] and tied for seventh place with NYU.

[18] After the 1959 baseball season, the PCC dissolved on July 1 following a scandal involving illegal payments to football players at several of its schools.

[19] In reaction, five former PCC members, formed the Athletic Association of Western Universities (AAWU), which Washington State's baseball program joined when play began in the 1960 season.

[6][23] Following Buck Bailey's retirement at the end of the 1961 season, the school hired Bobo Brayton, a former Washington State player and head baseball coach at Yakima Valley Junior College for a decade.

In the second round of the District VIII Regional, the Cougars defeated Stanford and advanced to the College World Series in Omaha.

[3][16][26] The second loss to Ohio State was 1–0 in 15 innings, a complete game by Buckeye starter Steve Arlin, who recorded twenty strikeouts and gave up just three hits.

[28] Following the 1968 season, two future major leaguers, Rick Austin and Ron Cey, signed professional contracts.

In 1976, the Cougars hosted and won the West Regional, defeating Pepperdine and Cal State Fullerton twice, in order to advance to the College World Series.

[3][16][30][31][32][33][34][35][36] Following the 1979 baseball season, renovations of Martin Stadium, Washington State's football venue, led to the construction of a new running track.

[40][41] In 1989, the field hosted Washington State's first nationally televised games, played on April 30 and May 1 against California and shown on ESPN.

[3][43][44] Steve Farrington, the head coach at Lower Columbia College in Longview for over a decade, was hired to replace Brayton in late June 1994.

[52] He later coached baseball at Columbia Basin College in Pasco, while also teaching science at Richland High School.

[62][63] These struggles, combined with cases of Mooney physically and verbally abusing players, led to his resignation following the 2004 season.

[3] Marbut was also officially reprimanded by the university in 2006, when a Seattle Times report revealed that he had falsified parts of his résumé when applying for a coaching position at Washington State.

This time, the team made it to within one win of the Super Regional round, but lost to Arkansas 7–2 in the elimination game.

[73] He led the Cougars for 4 seasons, compiling a 91–76 record, before getting hired as the head coach of the Wichita State Shockers on June 5, 2023.

On June 23, 2023, Nathan Choate was announced as the new head coach for the Cougars, having served in the same position for the Loyola Marymount Lions since 2020.

[76] On April 16, 2024, Washington State announced that the baseball team would become an associate of the Mountain West Conference instead, beginning in the 2025 season (2024-25 academic year).

[77] Following the Cougars' runner-up finish at the College World Series in 1950, the program's home venue was renamed Bailey Field.

[78][79] The Cougars played at the field through the end of the 1979 season; it was located on the current site of Mooberry Track, with home plate at its northwest corner.