The 23-year-old United striker scored his country’s first and last goals in the rout, and also provided an assist for Jesus Guajardo. Hernandez, who grabbed a hat-trick in Mexico’s opening Gold Cup fixture, against El Salvador, has now scored 19 goals in his 25 international appearances.
Against Cuba, his first arrived on 36 minutes when he headed home from close range after a well-worked short corner. Goals from Giovani dos Santos (2) and Guajardo followed before Hernandez swept in Mexico’s fifth and final goal with a neat half-volley.
The win moved Mexico two points clear of Costa Rica, who Hernandez and his team-mates will face on Sunday 12 June, at the top of Group A.
It wasn't all good news for Mexico, though. Before the game, five players tested positive for banned substance Clenbuterol and were withdrawn from the squad. An investigation is underway.