Bayern Munich began their Club World Cup campaign in emphatic fashion with a ruthless 10-0 demolition of Auckland City on Sunday, as Jamal Musiala marked his return from injury with a brilliant second-half hat-trick in a commanding team display.
Kingsley Coman opened the scoring in the sixth minute, heading home at the far post after a Joshua Kimmich corner.
The Bundesliga champions then took full control with a three-goal burst in as many minutes, as Sacha Boey smashed in a low shot from a Coman pass in the 18th minute for his first goal for Bayern, Michael Olise added a third with a simple tap-in moments later and Coman netted his second in the 21st minute.
Thomas Mueller then made it 5-0 just before the break, volleying in from close range after an Olise assist, and the French winger grabbed his second with a superb curling effort from outside the box.
With a dominant lead at half-time, Bayern coach Vincent Kompany made several changes, including handing a senior debut to 17-year-old Lennart Karl.
Substitute Musiala curled a trademark finish into the far corner in the 67th minute, before calmly converting a penalty he earned six minutes later and pouncing on a defensive blunder to score his third in the 84th.
Mueller also completed his double by sealing the rout in the 89th minute, as Bayern recorded the biggest win in the history of men's Club World Cups.
Despite the heavy defeat, Auckland coach Ivan Vicelich - who noted before the match that several of his players had to take time off from their day jobs - said he was proud of his team's effort.
"To be proud of the players is what we're after. It's a dream coming from an amateur level to play in this environment," he said.
"You can't hide on the field. (I'm) really proud, a lot of players put in a good amount and worked really hard."
The 13-time OFC Champions League winners Auckland will face Benfica on Friday, while Bayern meet Argentine giants Boca Juniors on the same day in Group C action.
Champions League winners Paris Saint-Germain later beat fellow European heavyweights Atletico Madrid 4-0 at the Rose Bowl in Pasadena.
PSG landed the first blow when Fabian Ruiz fired home from distance in the 19th minute as they showed no signs of rust in their first match since trouncing Inter Milan 5-0 to win their first Champions League title last month.
PSG doubled their advantage just before halftime when an Antoine Griezmann miss led to a counter-attack that ended with Vitinha firing home under sunny skies in Southern California.
The La Liga side appeared to have pulled one back when Julian Alvarez found the net in the 57th minute but it was overturned after a VAR review determined Koke had fouled Desire Doue in the leadup to the strike.
Substitute Senny Mayulu added a third goal for PSG in the 87th minute to end any hopes of an Atletico Madrid comeback, while Lee Kang-in fired home a stoppage-time penalty to round off the scoring.
Lionel Messi was denied by the crossbar in added time as Inter Miami were held to a goalless draw by Egyptian side Al Ahly in the tournament opener.
With newly knighted David Beckham among a crowd of 60,927 for the Group A match at Hard Rock Stadium in Miami Gardens, Argentina captain Messi saw his late cross-shot pushed onto the frame of the goal by Al Ahly goalkeeper Mohamed El Shenawy.
Former Aston Villa forward Trezeguet had a first-half penalty saved by Miami keeper Oscar Ustari.
The clash between Palmeiras and Porto also ended in a goalless draw in front of 46,275 people at MetLife Stadium in New Jersey.
Palmeiras had a 17-11 advantage in shots and 55.3 per cent possession, but the highlight of the match went to Porto's goalkeeper Claudio Ramos.
The 33-year-old was able to get his hands on a shot from Palmeiras winger Estevao and scrambled to also block midfielder Richard Rios’ attempt off the rebound in first-half stoppage time.
A late goal from Cristian Roldan was ultimately not enough as the Seattle Sounders went down to Botafogo 2-1 in front of their home fans.
First-half goals from Jair Cunha and Igor Jesus put the Brazilian side firmly in front until a header from Roldan found the back of the net in the 75th minute.
However, the Sounders were unable to find an equaliser as two shots on target were blocked in the final 30 seconds of stoppage time.
