The Denver Nuggets are all but certain to be the number one seed in the West, but Michael Malone does not expect a deep playoff run if his team continue to play as they did on Tuesday.

The Nuggets had the opportunity to clinch the top seed with three games of the regular season remaining, yet instead they lost 124-103 at the Houston Rockets, who are last in the conference.

Denver had won the teams' past 10 meetings, including the previous four by at least 15 points, but struggled even with Nikola Jokic back in the lineup.

Although they are still on course to finish first, theirs is now on course to be the worst record by the number one seed in the West since the 1976-77 Los Angeles Lakers.

And this defeat did not do wonders for Malone's hopes of finally guiding the Nuggets to the NBA Finals.

No team across the United States' four major sports have made more playoff appearances without reaching the championship round. This will be their 29th postseason campaign.

"If that's how we're going to play, we'll be out in the first round," the coach said.

"When we don't do our jobs, there's accountability, and I speak the truth.

"I just called our team 'soft,' and I dared someone to challenge me. No one did, because we as a group were soft tonight.

"I'm not saying we are soft, but tonight, we were."

Indeed, the Nuggets were out-rebounded 55-47, although the Rockets lead the league in average rebound margin.

With the Memphis Grizzlies two games back, the Nuggets have three more opportunities to make sure of top spot, continuing their road trip against the Phoenix Suns and the Utah Jazz before returning home to play the Sacramento Kings.