Trent Alexander-Arnold, 19, is the youngest member of an improving Liverpool defence that features new Scotland captain Andrew Robertson at left-back.
"I am very happy for them, and for Liverpool as well as a club. They've been doing brilliantly," Van Dijk said.
"You could have picked anyone for our Player of the Month award this month, everyone has been outstanding."
Tottenham, who harbour title ambitions of their own, are three points behind Liverpool after their three-game winning streak was ended by a surprise 2-1 defeat against Watford.
Surrendering the lead at Vicarage Road was a major blow just days after a 3-0 win at Manchester United that was perceived as a sign of Tottenham's ability to push champions Manchester City.
Mauricio Pochettino's side have too often let themselves down when the stakes are highest and they go into the Liverpool clash with question marks in several positions.
Harry Kane has looked to be suffering a World Cup hangover, while Hugo Lloris caused a distraction with his arrest for drink-driving.
"We know Harry Kane very well. It's not a situation that worries us," Pochettino said in response to claims Kane is fatigued and should be rested.
Lloris and Dele Alli will miss the Liverpool game due to injuries, while South Korea winger Son Heung-min may not be ready to start after returning to the club this week following the Asian Games.
In the circumstances, Pochettino could do with a dynamic display from Christian Eriksen.
Eriksen made it 15 goals in his last 18 international appearances with a double in Denmark's Nations League win against Wales on Sunday.
But the 26-year-old has not scored in his last 10 Tottenham matches.
"It's great to have that form, going into the weekend," Eriksen said.
"I've always had many shots, even in the Premier League, but I just haven't scored yet."