Luis Suarez made an immediate impact at Atletico Madrid by scoring two and setting up another as they trounced Granada 6-1 on Sunday.
The striker joined Diego Simeone's side from Barcelona in a €6 million (£5.5m/$7m) deal on Thursday after a move to Juventus fell through.
The 33-year-old came off the bench to make his debut for Atleti when he replaced Diego Costa in the 70th minute with his side 3-0 up.
Editors' Picks
The Uruguay international needed less than two minutes to contribute to the scoring as he set up Marcos Llorente to make it 4-0, knocking it on for the midfielder to slot home.