LeBron James compared his achievements with the Los Angeles Lakers to Tom Brady's early success at the Tampa Bay Buccaneers as the legendary quarterback prepares for his latest Super Bowl appearance.

James, a four-time champion and four-time MVP in the NBA, led the Lakers to the title last year in just his second season in LA.

Meanwhile, Brady is in his first year in Tampa Bay, having ended a glittering career with the New England Patriots, and has taken the Bucs to next week's big game against the Kansas City Chiefs.

James turned 36 last month but is still averaging an impressive 25.2 points per game in 2020-21, a mark he has not dipped below since his rookie season in 2003-04.

Meanwhile, Brady – a three-time NFL MVP chasing a seventh championship – is now 43 yet ended the regular season with 40 touchdowns, the second best return of his career, and a passer rating of 102.2.

Neither man shows signs of slowing and James was asked on Saturday what he made of the continued excellence of a fellow sporting great.

"It doesn't do anything for me as far as what I do in my profession, but it does let me know – lets both of us know – that we can still play this game at a high level," James said after the Lakers' 96-95 win at the Boston Celtics.

"No matter how many miles, how many games, no matter how many dollars, no matter the statistics – in our respective professions, at our age, we can still dominate our sport.

"Also we can bring together groups that we may have not been around for long periods of time.

"It's our professionalism, how we attack the sport, how we attack every single day of being a professional, wanting to win every single day – in practice, on the film, in games, and so on and so on.

"We gravitate towards people and people gravitate towards us because we have one common goal and that's to win and to win at the highest level."

James had 21 points, seven rebounds and seven assists against the Celtics, ending the Lakers' first two-game losing streak of the season with his 854th career win – outright eighth on the all-time list.

"We didn't want to lose one and we lost two in a row, Philly and Detroit," he said, with the Lakers at Atlanta next in the final game of a seven-game road trip.

"We understood we were coming into a hostile environment and we know how good this team is.

"We'd have to play good basketball in order to win and we were able to win one possession more than they did."

Those fine margins came as Kemba Walker missed a game-winning chance for the Celtics in the final seconds, capping a dismal night on which he shot 1-of-12 from the field and 0-of-5 from three.

Walker scored only four points in just over 28 minutes; it was the seventh time in his career he had scored no more than four points in at least 28 minutes in the regular season.

"I thought I had a good look [on the final shot] but I struggled all game shooting the basketball," Walker said.

He added: "It's more mental, I think. I'm trying my hardest not to get frustrated but I thought tonight I got frustrated at myself and it put me in a bad place.

"I'm not the type of player to get frustrated – I'm always smiling and I wasn't that tonight. I got into my own head and, mentally, I hurt myself.

"I can't do that to this team. These guys look to me, especially when things are going tough. I can't put my head down and not mentally be engaged in the game like I was tonight."