Mateo, born prematurely in December 2017, spent the first five months of his life in hospital.
The deadlock was eventually broken on 25 minutes as Ederson's long-ball found Aguero, who sent a cheeky lob into the back of the net from the edge of the box.
David Wagner's side have won just one of their last 14 Premier League matches - at West Brom, who were subsequently relegated - and they look desperately short of confidence.
There is uncertainty over where City's scheduled away clash with Spurs on October 28 will take place because the club's new stadium may not be open and Wembley is booked for an National Football League game.
Kofi Annan s'est éteint en Suisse à 80 ans — Ghana Ghana
Des membres de la scène politique française, ont aussi rendu un vibrant hommage à l'ancien secrétaire générale de l'ONU . De son premier mariage avec la Nigériane Titi Alakija, il avait eu deux enfants: Kojo, 47 ans, et sa soeur Ama, 49 ans.
City swarmed around the Huddersfield area in the opening moments, Aguero having a shot blocked and the visitors' Steve Mounie miscuing a clearance onto the top of his own bar inside three minutes.
It's going to be hard for everybody in the big six to catch Manchester City this season, simply because there was such a wide gap last term.
The 30-year-old's latest goal spree took him to nine Premier League trebles in his City career, just behind record-holder Alan Shearer's 11.
'We have to win for David Silva and his girlfriend Jessica.
Pep Guardiola's champions opened their home campaign with a pre-match display of ticker tape and exploding fireworks and Aguero continued the pyrotechnics on the field.
New cases brings measles count to 3 in Florida's Gulf Coast
Pregnant women, who are infected by measles , can give birth to a premature child or a low-birth-weight baby. Ulyee Choe, an infectious disease specialist and the county's health director, said in a statement Monday.
Aguero then went inches away from grabbing a hat trick as he hit the inside of the post from outside of the box and then smashed wide.
Understandably, much of the news this week has focused on Kevin De Bruyne who will be ruled out for three months with a knee injury.
"Nobody pushed him, he made a decision to finish his worldwide career so he could rest a little bit more with his wife, family and his little boy while continuing to play with us".
Guardiola shuffled his starting lineup and started with a back three, Bernardo Silva and Mendy as wing-backs and a front two of Aguero and Jesus.
City broke the 100-point barrier for the first time on route to their first title since 2014.
Injury blow means Tupou must wait to face All Blacks
Crusaders back-up Tim Perry has been named in his place on the bench for his Test debut. All Blacks captain Kieran described the try as a turning point.