Enner Valencia's brace helped Tigres UANL take a giant step towards the Concacaf Champions League final after a 3-0 win over Santos Laguna.
Valencia struck twice after Eduardo Vargas opened the scoring for the hosts in the first leg of the semifinal tie.
The result leaves Tigres in a strong position to reach a third final in the past four editions of the competition heading into the second leg on April 10.
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They needed just eight minutes to open the scoring, Vargas tapping in after Santos Laguna goalkeeper Jonathan Orozco could only parry a Julian Quinones strike.