Nigeria striker Umar Sadiq scored on his debut for Real Sociedad as the hosts battled Atletico Madrid to 1-1 at the Anoeta Sports Complex.
Alvaro Morata swept in at a corner in the fifth minute, but Sadiq headed home a second-half equaliser following his arrival from Almeria.
Sadiq Umar celebrates scoring for Real Sociedad against Atletico Madrid
The 25-year-old joined Sociedad on transfer deadline day as a replacement for Sweden forward Alexander Isak, signed by Newcastle last week for a reported £58 million.
More concerningly for Atletico, goalkeeper Jan Oblak was forced off with a leg injury late on.
“Hopefully it will be minor and the doctors will tell us in the next few days,” said Atletico coach Diego Simeone, whose side are at home to Porto next week in the Champions League.
In another LaLiga fixture. Mallorca and Girona played out 1-1 in the early game.