Lauren Graham recorded a game high 21 points but the Pirates couldn't overcome Grafton on the road as they fell 55-53. Crookston's five-game winning streak came to an end as it falls to 10-8 on the season.
Backing up Graham's point total was Kristin Remick with 11 points, which included three treys. Rachel Wold followed up with nine points and Sara Bjerk added six.
Asya Nelson led Grafton with 15 points, while Brooke Gaustad had 12.
The Pirates will look to bounce back Tuesday, Feb. 9 when they host East Grand Forks at 7:30 p.m.