Zion Williamson recognises he still has a lot to learn a month into his NBA career, although his New Orleans Pelicans team-mates claim the rookie is already getting "vet calls".

The number one overall draft pick made his long-awaited league debut in a defeat to the San Antonio Spurs on January 22 after recovering from arthroscopic knee surgery.

Williamson played his 11th game on Friday, and a 128-115 win over the Portland Trail Blazers moved the Pelicans to within four games of the playoffs in the Western Conference.

The 19-year-old is averaging 22.4 points and 7.2 rebounds per game, and he was typically influential again in a 25-point display.

Speaking to reporters afterwards, Williamson insisted he is far from the finished product and does not expect to fulfil his immense potential until "year four or five".

However, having visited the free-throw line 10 times against the Trail Blazers, shooting 50 per cent, Williamson's team-mates are mocking his early ability to draw fouls.

"I'm learning the pace, when to do things, when not to do things," he said. "I'm starting to get my legs back under me a little bit, I'm learning my team-mates, just the travel.

"Even though I'm a rookie and people think that I'm doing good, there's so much that I have to learn.

"I'm always learning something new from JJ [Redick], E'Twaun [Moore], Jrue [Holiday], Zo [Lonzo Ball], Derrick Favors, so much about the game. There are small things that I'm learning.

"By year four or five, I feel like I'm going to have all of them down.

"I think I am starting to get a little bit comfortable - I'm not saying a lot [more comfortable] because it's only 11 games. I've got a lot to learn, but I'm ready for the journey."

On the foul calls, Williamson added: "I think I just draw a lot of fouls. My team-mates joke with me and say I get 'vet calls'. I don't know about that yet.

"But when we get to the free-throw line, it's one thing to get there but we just have to knock them down."

Portland are one of the teams standing between 11th-placed New Orleans and a playoff berth in the top eight, and Williamson acknowledges there is little room for error for his team.

"Honestly, for us, at this point, I think every game is important," he said. "It's really like a college season at this point now - every game matters. If we take a loss, it's a big loss, a tough loss for us.

"So we need to come into every game ready to play, ready to lock in, we can't have any slow starts. And if we do, we can't dig ourselves into a big hole."