William Vizcarra pitched five scoreless innings Saturday night as the Leones de Yucatan shut down the Sultanes de Monterrey, 4-1, to take a 3-1 lead in the Mexican League championship series.
Vizcarra (1-0) allowed two hits, walked three and did not strike out a batter. He held the Sultanes hitless from the second through the fourth.
David Dominguez was charged with Monterrey's lone run in two innings before Jose Vargas got the last four outs to record his fourth postseason save.
In the last two games, Leones starting pitchers have given up just five hits over 11 2/3 scoreless innings.
Raul Sanchez put Yucatan in front for good with a three-run homer, his third of the playoffs, in the fourth inning. Willie Romero added an RBI single in the sixth and Luis Arredondo went 3-for-4 with two runs scored.
Mendy Lopez drew a bases-loaded walk in the eighth to produce the offense for Monterrey.
Juan Acevedo (0-1) took the loss allowing four runs on four hits in five-plus innings. He struck out two and walked three.
Yucatan can capture the title on Sunday when it hosts Game 5 of the best-of-7 series at 7 p.m. ET.
Max Lance is a contributor to MLB.com. This story was not subject to the approval of the National Association of Professional Baseball Leagues or its clubs.