This is Matchday 1 of La Liga 2026/27, meaning both sides have virtually no in-season data to lean on — one-game samples and xG readings are statistically meaningless. Both clubs sit on 1 point from a 0-0 draw, both rank mid-table, and there are no market odds to anchor probabilities. The pre-season form window shows both sides hovering around parity: Celta's recent run (D D W D W D) is solid but their xG sample of one game at 0.66 for / 0.58 against is too thin to trust. Osasuna's xG-against of 1.28 (also a one-game sample) looks alarming but is noise.