Austin March hit a two-run double and Ben Hall followed with an RBI double that gave Cooperstown a 3-0 lead in the third inning.
Cooperstown starter Eann Cox, who struck out eight consecutive batters at one point, gave up an unearned run in the top of the fourth. The Dutchmen completed their at-bats in the inning before a rain delay was called. The game was called off less than an hour later. It will pick up in the bottom of the fourth inning July 19. The teams will follow with a regularly scheduled game at Doubleday Field.
The Hawkeyes host a doubleheader against Elmira at 2 p.m. today.