Guasave and Mexicali join Culiacan in the second round.  One of the losing teams will join them, but I don't know yet which one.

GUASAVE 7, OBREGON 5 IN GUASAVE

Game summary: Guasave scored three in the second and never trailed. Obregon cut the lead to 3-2 and 4-3 but could never catch up.

Obregon: Carlos Valencia was 2-for-4 with a home run and three RBIs. Doug Clark was 2-for-3 with a walk and scored once.

Guasave: Jose Felix (Texas) was 2-for-3 with a double. Eduardo Arredondo was 2-for-4 with a double, scoring once and driving in one.

MEXICALI 7, MAZATLAN 0 IN MEXICALI

Game summary: Mexicali scored two in the second and five in the fifth.

Mazatlan: Ryan Hinson struck out three in two shutout innings, giving up one hit and no walks. Oswaldo Morejon was 2-for-4.

Mexicali: Jorge Campillo allowed five hits and no walks in five innings. Ricky Alvarez was 2-for-4 with a run and two RBIs.