Colo Colo survived a late flurry from Palestino to win 2-1 on Sunday and claim a four-point lead atop the Chile Primera Division.
Juan Delgado and Esteban Paredes scored for Colo Colo in the opening 20 minutes but a 90th-minute penalty from Palestino's Sergio Lopez ensured the league leaders had a nervous finish.
Sunday's victory took Colo Colo to 22 points after eight rounds with the 29-time Chilean champions still undefeated in the Clausura campaign.
O'Higgins are the only other undefeated club so far this season and sit second on 18 points, while Universidad Catolica are third, just ahead of Deportes Iquique on goal difference (both 16 points).
At Palestino's Estadio Santa Laura, Colo Colo stunned the home side in just the fourth minute with a nice move down the right-hand side, which was finished off by Delgado.
The visitors doubled their lead in the 19th minute thanks to another cross from the right wing, which picked out a charging Paredes and the veteran midfielder headed the ball home.
Palestino worked hard in the second half but first managed to score in the final minute when Lopez was tripped in the area and then converted the subsequent spot-kick himself.
The win was Colo Colo's fifth in a row, while Palestino, who led the Primera Division earlier in the season, have one victory in their past four matches to sit fifth on 14 points.
O'Higgins leapfrogged Catolica into second on Saturday with a 2-0 victory over Universidad.
Pablo Calandria put O'Higgins ahead just past the half-hour mark but the home side were unable to wrap up victory until the first minute of second-half stoppage time when Yerko Opazo scored.
Catolica's hopes of equalising were severely weakened when midfielder Milovan Mirosevic was sent off in the 78th minute.
A hat-trick from Manuel Villalobos saw Deportes Iquique come from two goals down at half-time to win 3-2 at home to Antofagasta, while in another high-scoring encounter; Audax Italiano drew 3-3 with Universidad de Chile.
Santiago Wanderers defeated Union La Calera 1-0, Cobresal trumped Cobreloa 3-0, Everton won 3-1 away to Union Espanola, Huachipato edged out Nublense 1-0 and Rangers were held to a scoreless draw by Universidad Concepcion.
|Coach: E. Astorga|
for N. Suarez 46'
for E. Carvajal 53'
for R. Ramos 69'
|Vardy hits back at Leicester critics after sinking Liverpool|
|Leicester City 3 Liverpool 1: Vardy at the double in reminder of Ranieri´s glory|
|Srivaddhanaprabha: Leicester players not behind Ranieri sacking|
|Juventus without trio for Napoli semi-final|
|AFC Champions League Review: Lokomotiv score after 19 seconds, Lekhwiya grab draw|
|Kane could break Shearer´s record, says Spurs legend Mabbutt|
|Manchester City miss leader Hart - Wilson questions Guardiola call|
|Iniesta hoping for Luis Enrique stay at Barcelona|
|Atletico´s Hernandez given community service after domestic violence charge|
|Man of the moment Gabbiadini has ´no hard feelings´ towards Napoli|
|Spanish? I struggled with Italian! – Allegri reacts to Barcelona rumours|
|Gotze ruled out for unknown period with ´metabolic disorders´|
|Rabiot would have to consider Real Madrid offer|
|Isco and Morata deserve more minutes, concedes Zidane|
|Imagine if they didn´t let Messi and Neymar in! - Aurier episode sparks UEFA chief´s Brexit concerns|
|Ibrahimovic is ´running Manchester United dressing room´|
|New Everton Lukaku contract ´99.99999999 per cent done´|
|Ibrahimovic: Manchester United future does not depend on Champions League qualification|
|Allegri expecting ´angry´ Napoli|
|Ferguson disagreed with the world on Pogba´s value, says Raiola|
|Wolfsburg hire Arsenal academy boss Jonker as head coach|
|Raiola refuses to confirm Ibrahimovic will stay at Manchester United|
|Donnarumma deserves to play in a great team - Agent|
|Le Tissier: Man United would not have had Gabbiadini strike disallowed|
|Riviere - We do not regret Balotelli signing|
|Tianjin Quanjin tore up agreement to sign Falcao|
|PSV keeper Zoet bemoans Feyenoord´s ´f***** up´ Hawk-Eye winner|
|Ibra revels in trophy-winning exploits - but did he take a dig at Arsenal?|
|Evra: We disrespected Marseille after Le Classique humiliation|
|Marcelo: LaLiga in Real Madrid´s hands|
|Garitano sacked by LaLiga strugglers Deportivo|
|Klopp talks down player power|
|Dembele worth £50m and good enough for Real Madrid – Gamboa|
|´It´s very painful´ - Tadic heartbroken after final loss|
|´I was really upset´ – Fabregas struggled with lack of playing time|
|Cerezo: Torres renewal? We´re trying to bring Messi to Atletico|
|´He had the aura and confidence´ – Neville compares Ibrahimovic to Cantona|
|Neymar: Barca not thinking of Madrid or LaLiga rivals|
|Everything´s a plot against him - Ramos laughs off Pique theory|
|Wolfsburg part ways with Ismael|
|Lingard loving every minute of Wembley scoring streak|
|Pioli rues setback in Inter´s quest for Champions League|
|Zidane cools fresh Bale injury worries after stunning Real Madrid comeback|
|Pique fumes as Real Madrid benefit from controversial decision|
|Emery warns PSG against complacency|
|Gabbiadini scored three times, says frustrated Puel|
|Real Madrid equal longest scoring streak in Spanish history|
|Roma are fed up - Spalletti hits back amid penalty controversy|
|Lyon´s Memphis Depay revels in two-goal performance|
|Marseille 1 Paris Saint-Germain 5: Record crowd sees OM thrashed|
|Villarreal 2 Real Madrid 3: Bale, Ronaldo and Morata complete stunning turnaround|
|Inter 1 Roma 3: Nainggolan at the double in dominant display|
|Ronaldo spot on as he takes LaLiga penalty record|
|Mourinho: Fans will camp at Ibrahimovic´s house to make sure he stays!|
|Late Barca defeat leaves Simeone with sense of deja vu|
|It is not easy to keep winning – Mourinho emotional after Manchester United success|
|Mourinho: Outstanding Ibrahimovic won us the cup|
|Pogba: That´s why Ibrahimovic came here|
|Ibrahimovic hails his predictive powers after sealing EFL Cup triumph|
|He´s incredible - Carrick hails Ibrahimovic impact after EFL Cup win|
|Mourinho equals Clough and Ferguson record with EFL Cup triumph|
|Manchester United 3 Southampton 2: Ibrahimovic settles thrilling final|
|Lewandowski focused on writing his own Bayern history after Gerd Muller comparisons|
|Muller: Goals aren´t everything for me|
|Bacca goal should not have stood – Montella|
|Kane one of the top strikers in the world - hails Pochettino|
|Messi celebrates 400th win with Barcelona|
|Atletico Madrid 1 Barcelona 2: Messi leaves it late again to stun hosts|
|Leicester should have to play without a manager, blasts Mihajlovic|
|What a first half! - Record-breaking Kane lauds Tottenham display|
|Fabregas ´humbled and proud´ after 300th Premier League game|
|Sassuolo 0 AC Milan 1: Controversial Bacca penalty proves decisive|
|Zarate confirms ACL injury|
|Bayern Munich deny Eberl approach|
|Rooney on bench for EFL Cup final|
|Tottenham 4 Stoke City 0: Kane hat-trick sends Pochettino´s side second|
|Norwich City 1 Ipswich Town 1: Knudsen and Bialkowski frustrate Neil´s men|
|´No regrets´ for Ben Yedder after rejecting PSG move|
|Mignolet: Liverpool harder to stop now than with Suarez|
|O´Neill rules out taking Leicester job and questions players´ attitude|
|´Uncle´ Toure still uncertain on Manchester City future|
|Mourinho already knows next Manchester United transfer targets|
|Newcastle Jets 1 Central Coast Mariners 1: Honours even in F3 Derby|
|Half a century of Kazuyoshi Miura: Japanese legend plays on 50th birthday|
|´Criminal´ if Shaw doesn´t succeed at United - Neville|
|Kaka scores first goal in Orlando City´s new stadium|
|Conte lauds Chelsea´s milestone man Fabregas|
|Pochettino questions readiness in Tottenham´s trophy quest|
|Mata wants to extend Manchester United contract|
|Mourinho is a winner - Cantona backs United for success|
|Allegri grateful Juve control Serie A title destiny|