Argentina head coach Lionel Scaloni celebrated a "magnificent year" after the Copa America champions qualified for the 2022 World Cup.

Despite a goalless draw at home to already-qualified rivals Brazil, Argentina booked their spot at Qatar 2022 after Colombia, Uruguay and Chile all failed to win in CONMEBOL on Tuesday.

It caps a successful 2021 for two-time world champions Argentina, who ended their 28-year wait for silverware by dethroning Brazil in July's Copa America final.

"This was a magnificent year," Scaloni – who matched Alejandro Sabella for the country's second longest undefeated run in CONMEBOL qualifying amid a 13-game streak, said. "Winning the Copa, qualifying for the World Cup unbeaten. It was a dream."

"We got four points against two very difficult rivals. We all like to win of course but these games help a team to mature. Without a doubt, the balance is positive.

"Having qualified so far in advance, in a really difficult qualifying section, is something we should be proud of."

Lionel Messi returned to the line-up but was unable to inspire Argentina, who played out a stalemate with Brazil in San Juan to extend their unbeaten streak to 27 matches across all competitions.

That underwhelming performance left Argentina waiting to discover their World Cup fate, though La Albiceleste only had to wait less than an hour following 10-man Chile's 2-0 loss at home to Ecuador.

Argentina – searching for their first world crown since 1986 – are second in the CONMEBOL standings with five matches remaining, six points behind leaders Brazil and six clear of third-placed Ecuador.

Eliminated in the last-16 stage at Russia 2018, Argentina and Brazil have both played a game less following September's qualifier in Sao Paulo, which was sensationally abandoned after Scaloni's men left the field as Brazilian health officials tried to detain visiting players due to coronavirus regulations.

After his subdued performance, superstar captain Messi – who missed Paris Saint-Germain's two matches prior to the international break – allayed his fitness concerns.

"I'm fine otherwise I wouldn't have played," Messi said before learning Argentina had qualified after the South American powerhouse made it six games without conceding – their longest streak in qualifying.

"I've been standing for a long time and it's not easy to play a game with as much pace as this one.

"Luckily I'm fine and I know that little by little I'm going to pick up the pace. I hope I can finish the year well."