Lionel Messi says breaking the single-season MLS points record is a secondary concern for Supporters' Shield winners Inter Miami as they approach the playoffs.

Miami clinched their first Supporters' Shield triumph by beating the Columbus Crew – the reigning MLS Cup holders – 3-2 on the road on Wednesday, with Messi scoring two goals including a wonderful free-kick.

With two games remaining in the regular season, versus Toronto on Saturday and the New England Revolution two weeks later, Miami could yet set a new points record for the league, with two victories enough to overhaul the Revs' 2021 mark of 73 points.

Messi, however, says achieving that feat will mean nothing if the Herons cannot back it up in the postseason.

"The points record is secondary, the main thing is what is coming up with the playoffs," Messi told Apple TV after Miami's Supporters' Shield triumph.

"First, we have a best-of-three series, but then it's elimination games and anything can happen. 

"We have a big advantage now, being able to play at home. We are very strong at home, but still have to prove we can win."

Toronto, meanwhile, are on the verge of being eliminated from playoff contention following their 4-1 midweek defeat to the New York Red Bulls.

John Herdman's Reds currently occupy the final wild-card place in the Eastern Conference, but Saturday's game is their last of the campaign while all of their direct rivals have two more to play.

That means Toronto must beat Miami and pray for favours from elsewhere to keep their season alive, leaving Herdman to lament his team's tame display on Wednesday.

"It was not good enough, there was no excuses. Not good enough with the setup and not good enough on the pitch," Herdman said.

"Even as a tactical staff, not being able to find the right solutions... We've got to own this, the whole group.

"It was a team that was too passive, in a game where we had to be strong, we had to have character, personality, fight. It just wasn't there, in big moments under pressure."