Sevilla missed two penalties as 10-man Rayo Vallecano clung on for a goalless draw to extend an unbeaten start to the Primera Division season.
Alvaro Negredo was first to miss from the spot on seven minutes after Jordi Amat had pulled down the Spanish international inside the area, but he struck the post and the ball rebounded to safety.
But the visitors were handed another opportunity 20 minutes from time when Ivan Rakitic was brought down by Ruben Martinez.
The goalkeeper was shown a red card but his replacement Dani Gimenez did not even have to make a save as Rakitic pulled his penalty wide.
And despite referee Clos Gomez further infuriating the home fans by adding on six minutes for stoppages, Rayo held on to move joint top of the table with seven points from their first three games.
Sevilla themselves remain unbeaten but will regret dropping two points having controlled the game from start to finish.
Malaga continued their unbeaten start to the Primera Division season with a 1-0 victory at Real Zaragoza thanks to Nacho Camacho's second-half header.
The hosts had the better of the play before the break but were made to rue a glaring miss by Ndri Romaric after just 18 minutes as he side-footed wide from 12 yards with the goal gaping.
Despite continuing to have less of the ball, Malaga posed the greater threat after half-time and went ahead on 55 minutes when Camacho beat Roberto to Eliseu's cross to head home.
Second-half goals from Iago Aspas and Mario Bermejo were enough to hand Celta Vigo their first win in the Primera Division for five years as Osasuna lost 2-0, slipping to a third consecutive defeat.
Joseba Llorente headed onto the bar with the visitors' best effort early on, but thereafter the hosts dominated and found the breakthrough when Augusto Fernandez's cross was flicked home by Aspas 21 minutes from time.
Alejandro Arribas was then dismissed for a second bookable offence and Celta made their man advantage count in stoppage time when Bermejo rolled in the second.
Victor's second-half header was enough to send Real Mallorca level at the top of the Primera Division table for at least 24 hours.
Mallorca had to wait until the 75th minute until they broke down a stubborn Real Sociedad rearguard when Victor stooped to head in Javi Marquez's cross.
The Islanders almost immediately relinquished their hard-fought lead, however, with debutant Anderson Conceicao blocking Xabi Prieto's goalbound shot off the line moments later.
Promoted Deportivo La Coruna continued their promising start to life back in the top flight with a 1-1 home draw against a Getafe side who last weekend beat reigning champions Real Madrid.
Riki gave Depor a flying start when he netted after just six minutes against his former club but Getafe hit back to claim a share of the points when Abdelaziz Barrada, the match-winner against Madrid, equalised in the 26th minute.
The result leaves Depor still unbeaten with five points from three matches, while Getafe have one point less.
