Atletico Madrid and Barcelona showed the battle for the title would be a long, drawn-out affair after the Spanish league co-leaders drew 0-0 on Saturday. Both teams finished the first-half of the season tied on 50 points after an exciting, back-and-forth showdown at Vicente Calderon Stadium yielded no winner.

Barcelona were troubled by Atletico striker Diego Costa throughout, while second-half substitute Lionel Messi enjoyed the visitors' best chances as the Barcelona forward headed wide before forcing goalkeeper Thibaut Courtois into a clutch stop in the 81st.

Neymar also came on in the second-half for Barcelona but the Brazil striker made little impact.Atletico Madrid and Barcelona showed the battle for the title would be a long, drawn-out affair after the Spanish co-leaders drew 0-0 in their first league meeting of the season on Saturday.

Both teams finished the first-half of the season tied on 50 points after an exciting, back-and-forth showdown at Vicente Calderon Stadium yielded no winner.

Barcelona were troubled by Atletico striker Diego Costa throughout, while second-half substitute Lionel Messi enjoyed the visitors' best chances as the Barcelona forward headed wide before forcing goalkeeper Thibaut Courtois into a clutch stop in the 81st.

Neymar also came on in the second half for Barcelona but the Brazil striker made little impact as the teams played out their third straight draw following the summer Spanish Super Cup series.

Atletico will remain encouraged about winning their first title since 1996 and dislodging the Barcelona-Real Madrid monopoly that has been broken only by Deportivo La Coruna and Valencia since. Real Madrid travels to Espanyol on Sunday knowing a victory will move them to within three points of the leaders.

While Barcelona counted on their squad of regulars, Atletico's lineup was relatively unchanged down to coach Diego Simeone's all-black suit and jacket.

The hosts started more brightly behind Diego Costa as the Brazilian-born striker's short cross along the goal-line was headed just over for the game's opening chance four minutes in.

The physical Diego Costa forced goalkeeper Victor Valdes - back from a two-month injury hiatus - into a save before awkward positioning kept him scoring from a headed-on corner in the 28th.

Barcelona braved Atletico's early surge and their choking pressure up the field with their passing game, with Pedro Rodriguez heading over goal in the 33rd before Courtois saved Gerard Pique's long, low shot.

Tension was building as the action moved end-to-end in the hard-fought, energetic match with Simeone warned by the referee to cool down just before the break.

Messi replaced Andres Iniesta to start the second half but it was Diego Costa who continued to prowl Barcelona's goal only to shoot wide in the 59th.

Messi perhaps showed some rust from a two-month injury layoff when he headed Jordi Alba's cross wide from the penalty spot at the other end.

Atletico looked set to break through in the 79th but Arda Turan volleyed a looping ball straight at Valdes, moments before Courtois denied Messi's hard-taken shot from the left.

Also, Athletic Bilbao maintained their grip on fourth by demolishing Almeria 6-1 while Valencia's season-long slide continued with a 2-1 defeat at Celta Vigo.

Athletic enjoy a four-point cushion in fourth at the halfway point of the season, while Almeria sits three points above the drop zone. Celta moved three points clear of the relegation zone with the victory.

Daniel Carrico scored in the last minute as Sevilla rallied to draw 1-1 at Elche.