The Vallejo Admirals lost their fourth straight game, this one a 7-5 decision on Wednesday to the Sonoma Stompers at Arnold Field.
The Admirals got home runs from Chris Fornaci and David Kiriakos but were swept in the two-game, Pacific Association series.
Vallejo (23-19) went up 3-1 in the fifth when Nick Crouse singled and Fornaci hit his 14th homer. Later in the inning, Kiriakos drove in Rian Kiniry.
Sonoma (27-15) tied it 3-3 in the fifth and Vallejo scored once more in the sixth to lead 4-3 before the Stompers scored twice in the bottom of the sixth to pull ahead 5-4.
Vallejo added one more in the ninth on Kiriakos’ solo homer, his ninth of the season.
Frank Valentino (2-4) suffered the loss as he went 5 2/3 innings, allowing five runs and four hits. He had four wild pitches.
Juan Espinoza (1-0) earned the win as he went six innings, allowing six hits and four runs, three earned. Jacob Cox earned his 14th save despite allowing a run in the ninth.
The Admirals did not lose any ground to first-place San Rafael (30-12), which lost to Napa 6-2. With the win, Sonoma is just three back of first place.
Vallejo returns home to start a four-game homestand on Thursday starting with a two-game series against the Napa Silverados.