Veracruz allowed Tigres to score two goals in the opening four minutes without challenge, as they protested unpaid wages in Liga MX.
Cruz Azul were crowned champions of the inaugural Leagues Cup on Wednesday.
Tigres UANL and Cruz Azul booked their spots in the Leagues Cup final with wins over America and LA Galaxy respectively.
A 1-1 draw in the second leg was enough for Monterrey to beat Tigres UANL to the CONCACAF Champions League title.
Monterrey will take a priceless slender 1-0 lead back home following Tuesday's opening leg in the all-Mexican decider.
Monterrey claimed another crushing win over Sporting Kansas City to advance to the CONCACAF Champions League decider.
Seeking their first title after two previous finals, Tigres UANL defeated Santos Laguna 5-3 on aggregate.
Tigres UANL closed in on the CONCACAF Champions League final after beating Santos Laguna 3-0.
Santos Laguna and Tigres UANL booked their spots in the CONCACAF Champions League semi-finals.
Enner Valencia helped Tigres UANL beat Houston Dynamo in the first leg of their CONCACAF Champions League quarter-final.