Debut goals by Emmanuel Dennis and Cucho Hernandez helped promoted Watford to a 3-2 win over Aston Villa.
Watford went in front after 10 minutes through Dennis, who scored his first Premier League goal at the second attempt after a block by Ezri Konsa.
The Hornets doubled their advantage three minutes before half-time when Ismaila Sarr's shot took a deflection off Tyrone Mings before going in.
Just 49 seconds after coming on for his Premier League debut, Hernandez added a third for Watford with a stunning curled effort.
John McGinn pulled a goal back for Villa three minutes later, thumping in from debutant Leon Bailey's cross.
Danny Ings scored on his Villa debut with a stoppage-time penalty, but it wasn't enough as Watford claimed the three points.
See: Watford report | Villa report
Next fixtures
Watford: 21 Aug v Brighton (A)
Villa: 21 Aug v Newcastle (H)
Match officials
Referee: Mike Dean. Assistants: Darren Cann, Mark Scholes. Fourth official: Robert Jones. VAR: Peter Bankes. Assistant VAR: Stuart Burt.
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