Ireland striker Adam Idah set up the first goal and scored the second as Swansea moved top of the Sky Bet Championship with a 2-0 home win over Watford.
Idah and Eom Ji-sung grabbed first-half goals as Swansea made it 10 points from four games, leapfrogging Charlton and Wolves to take over at the summit.
It also meant Watford lost their unbeaten league record after beating Southampton and drawing against Wrexham and West Ham.
Before kick-off paid Swansea tribute to their former manager Kenny Jackett, who died in June at the age of 64.
Jackett spent his entire playing career at Watford with 428 appearances for the Hornets and his family were in attendance at Swansea.com Stadium.
Swansea were impressive from the off, with Idah testing Federico Ravaglia and Marko Stamenic heading against a post..
The visitors’ defence was breached after eight minutes when Stephen Eustaquio, on his home debut after arriving from Porto, released Idah — and he had presence of mind to give Eom a tap-in for his second goal in as many games.
Watford cleared their heads for Mattie Pollock and Hector Kyprianou to go close, but Swansea doubled their advantage after 29 minutes.
This time Eom was the creator, cutting in from the left-hand touchline and finding Idah with a delicious reverse pass.
Idah steadied himself as Ravaglia approached and slipped the ball through the goalkeeper’s legs with the minimum of fuss.
The Cork striker’s work-rate was to be admired and he left the action midway through the second period to a rousing ovation.
Zan Vipotnik replaced Idah, with last season’s Championship top scorer seemingly set to stay at Swansea after summer speculation that he was to leave the club.
Elsewhere, Mukasa scored twice as West Ham beat Wolves 4-2 to pick up their first three points since last season’s relegation to the Championship.
Wolves, who also went down from the Premier League last term, could have gone top with a victory but ended up losing for the first time under new manager Cesar Peixoto.
Jarrod Bowen and Konstantinos Mavropanos also scored for the hosts, with Marshall Munetsi and Mavropanos’ own goal replying for Wolves.
The win eased the pressure on manager Nuno Espirito Santo on a night when Amanda Staveley, who is heading a consortium looking to buy a significant stake in West Ham, was at the London Stadium.