LeBron James described it as "pretty cool" to record a first 20-20 of his career in steering the Los Angeles Lakers to a 3-1 lead in their first-round playoffs series against the Memphis Grizzlies.

The veteran has been fired up for the Lakers in the playoffs and had 22 points to go with 20 rebounds as Los Angeles secured a 117-111 overtime win to take a commanding advantage.

James also had seven assists and committed just one turnover in what was a record-extending 270th playoff game for the NBA's all-time leading points scorer.

"I just try to be as great as I can be offensively, but more importantly on the defensive end," James said. 

"That was the mindset tonight. I was able to make a couple of plays. My teammates told me I had 20 and 20. It's the first time I've done it in my career, so that's pretty cool, I guess."

It was James who drained the basket to force overtime then nailed a layup while being fouled that saw the Lakers go up by five in overtime with a little under 30 seconds remaining.

The latter bucket saw James flex his muscles in front of a boisterous home crowd.

"I've been a part of moments where you know you get a dagger play or a kill shot," James said. 

"I felt like that play — it wasn't going to close the door, but there wasn't much light at the end. I just let the emotion come out."

Anthony Davis said of James: "He just took over down the stretch. Got us a bucket to get to overtime.

"All our guys [performed], it was a good team effort. This team is not going to go away."

The Lakers will aim to get the series wrapped up back in Memphis in Game 5 on Wednesday.