Riverside fell to Milton-Union Thursday by a final of 7-3.
The Pirates jumped out to a 2-0 lead after three innings but could only provide one more run in support of freshman pitcher Syler Clark who was called to the mound after a depleted Riverside staff needed his services.
Clark pitched a complete game giving up only seven hits and three earned runs.
Landon Purtee hit a double and drove in a run for the Pirates.
Damian Smith and Gavin Robinson each had RBI singles.
Riverside falls to 9-8 and 4-8 in league play.
Fairbanks stomped Trias 8-0.
Mechanicsburg toppled Greenon 5-0.