The teenager lined up against international superstar Radamel Falcao for the under-21s at Old Trafford, and was able keep the Colombian off the scoresheet.
Tottenham drew 1-1, scoring through Kenny McEvoy with Rafael da Silva equalising for the visitors.
It was a big call for Ehiogu to put 17-year-old Carter-Vickers up against Falcao, but the American youth international did not let him down.
The coach said: "You try not to expect too much but I always back Cameron and I had no issue with him being able to handle the situation.
"We’ve always had confidence in him and he isn’t fazed by anything. It was United at Old Trafford, he was up against a world-class striker and his performance was a real testament to the lad. It all bodes well for the future."
A week earlier Carter-Vickers was starring for the under-18s in the Youth Cup against Chelsea, helping Spurs keep a clean sheet, but his performance against Manchester United's under-21 side, which also boasted the highly rated James Wilson, was particularly impressive.
Falcao was substituted after 73 minutes of the draw, with his display symptomatic of his struggles since joining United on loan.
Carter-Vickers' performance against him suggests Falcao will not be making the starting line-up for Louis van Gaal's side when the two clubs face off in the Premier League this weekend.