The Quakes saw their South Division second-half lead trimmed to 1 game with two to play as host Lancaster routed them 12-5 on Saturday night while the second-place Mavericks were beating up on Lake Elsinore, 13-2.
Quakes starter Manaurys Correa (1-10) was battered for 10 runs on 11 hits (including three home runs) in just three innings and left with his team down 10-2. Lancaster hit four home runs in all.
Darwin Perez had three hits and drove in four runs to lead the Quakes attack, while Ikko Sumi was a perfect 4-for-4 with a double. Angel Castillo tied for the team lead with his 21st home run.
Meanwhile, the 66ers dropped to a league-worst 50-88 this season with a 9-5 setback at Modesto. Chris Gutierrez led the way for the Sixers, going 2-for-3 with three runs, while Andres Perez and Austin Gallagher drove in three and two runs, respectively.
The win by the Nuts moved them to within one game of Visalia for the North Division’s final playoff spot, the wild card, with two games to play. San Jose won the first half, while Stockton has clinched the second half.