The 25-year-old who is on loan from Benfica, set up Lucas Moura for the opening goal in the 18th minute before his cushioned header for Son Heung-min led to Spurs’ third as well.
Vinicius might also have scored the second goal, but Gareth Bale’s low ball from the right intended for him was inadvertently turned in by LASK left-back Andres Andrade.
“He played well but can do better,” said the Portuguese boss.
“Considering the circumstances and that it was his first match, I’m really happy. The only thing that was missing was one goal, but he’s much more than that.
“He’s not selfish and is a good target man. He can play with Kane when his good period arrives and won’t just be the guy to cover him. I am very happy.”
Although many eyes would have been on Bale, making his first start in a Spurs shirt since 2013, attention was also focused on 6ft 3in Brazilian Vinicius. Could he become the reliable extra striker Spurs have been seeking?
He made a very good first impression for Mourinho, which almost became a great impression in the ninth minute when he headed a simple chance wide from six yards. Vinicius was visibly frustrated by his miss, but atoned for mistake with a brilliant piece of skill for the opener.
The forward took down a long punt with a brilliant first touch before drifting left and squaring the ball for Lucas, who had taken his fellow Brazilian’s place in the middle. The midfielder finished off the move with a low shot.
It’s a good start for Vinicius and the Brazilian would now look to get more chances.
