It's Mexicali and Obregon in the championship series.

MEXICALI 12, GUASAVE 4 IN GUASAVE

Game summary: Guasave scored three in the first, but Mexicali came back with six in the second. Mexicali led 7-3 after four and put the game away with four runs in the fifth.

Mexicali: Ricky Alvarez was 3-for-5 with a double and a two-run homer, scoring twice. Chris Roberson was 2-for-5 with two doubles, scoring once and driving in three.

Guasave: Japhet Amador was 3-for-4. Mark Hamilton (Boston) was 2-for-4 with a three-run homer.

Mexicali moves on to play Obregon in the championship series.