University of Southern California and Fresno State combine for an NCAA postseason baseball record of 39 runs in the Trojans’ 22 – 17 victory in the West Regional. USC scores three runs in the top of the 9th inning to break the record of 37 set by the Trojans and Houston in 1990.

On May 26, 1995 — University of Southern California and Fresno State combine for an NCAA postseason baseball record of 39 runs in the Trojans’ 22 – 17 victory in the West Regional. USC scores three runs in the top of the 9th inning to break the record of 37 set by the Trojans and Houston in 1990.

Source:
Baseball Reference May 26