The attendance in the Levi's Stadium was given as 32,549 for the second of United's five American games, but looked significantly lower. Ahead of them, the three midfielders were Scott McTominay, Herrera and Anders Pereira and the three forwards were Demetri Mitchell from the left, Anthony Martial from the centre and Mata from the right.
Players such as Romelu Lukaku, Paul Pogba and Jessie Lingard are missing from Man Utd's preseason tour of the United States after playing for their nations in the World Cup, and several young players have been given their chance to show what they can do in a Man Utd shirt.
The youngsters were raw but impressive.
"There's no Lukaku or Rashford - not here, and probably not even for the start of the Premier League". It's not about if he (Sanchez) can play, it's about when he has to.
With only a year left on his contract, the Reds could be keen to shift the 28-year-old before he becomes a free agent.
United States launches campaign to pile pressure on Iranian leaders
Washington has also been accused of posting propaganda on social media aimed at stirring up unrest in Iran . Trump pulled out of an worldwide nuclear deal first brokered in 2015 by then-president Barack Obama.
Martial was in fine form during his first season at Old Trafford, and famously scored a great individual goal on his debut to rivals Liverpool. Match fitness is a different thing but we knew he could be good and it was a good physical effort for him - a bit more than an hour, which was good.
"Some are first-team, some under-23s, some coming from loans and going on loan, some are younger, under-18s".
Mourinho wanted Sanchez to make proper use of this summer to get to grips with what it takes to play for him as well as get in tune physically.
"The action for the cross for the goal is a handsome action. I am confident with them because they are all wonderful players and Anthony looks very sharp".
The only moment of real concern for United boss Jose Mourinho came during the first half when captain Antonio Valencia limped off injured.
Fellow substitute Tommy Thompson was the next to go close for the Earthquakes, the midfielder forcing a fine save from Lee Grant with 20 minutes remaining, while the woodwork denied San Jose during the closing stages.