Gimnasia La Plata moved top of the Argentina Primera Division after extending their winning run, while River Plate are close behind.
Pedro Troglio's Gimnasia La Plata side made it five straight wins with a 2-1 victory at home to bottom side All Boys.
A goal difference of +6 puts them narrowly on top, ahead of River Plate (also 27 points, +5), Estudiantes (26, +6), Colon (26, +4) and Godoy Cruz (25, +5).
Lucas Licht and Gustavo Bou were on the scoresheet for the league leaders at the Estadio Juan Carmelo Zerillo on Monday.
It took just eight minutes for the hosts to take the lead and it came in style.
Javier Mendoza crossed from the left and Licht's stunning overhead kick from inside the area was perfectly placed into the bottom corner.
Bou doubled the advantage on 69 minutes and while relegation-threatened All Boys netted through Jonathan Calleri, they were unable to find a second.
Omar Pouso was sent off for the hosts in the 88th minute after picking up a second yellow card.
River Plate are level on points with the leaders after Teofilo Gutierrez's first-half goal saw them past Velez Sarsfield 1-0.
A dreadful goal-kick provided Gutierrez with the chance and he made no mistake in the one-on-one.
Estudiantes slipped to third after being held to a 0-0 draw at Rosario Central and Colon were kept to a goalless draw at home to Belgrano.
Godoy Cruz claimed the biggest win of matchday 15, cruising past Atletico Rafaela 3-0.
A Juan Eluchans own goal in the first half sent the hosts on their way before Julio Rodriguez and Diego Rodriguez added efforts after the break.
San Lorenzo are winless in three matches after playing out a second consecutive 0-0 draw, this time against Newell's Old Boys.
Relegation-threatened Argentinos Juniors suffered a 1-0 loss at home to Racing Club, who had Rodrigo de Paul score a dramatic late winner.
Olimpo edged Quilmes 1-0, Arsenal struck three second-half goals in a 3-1 win over Lanus and Juan Roman Riquelme's stunning late 30-yard effort saw Boca Juniors past Tigre 1-0.
|41||O. Pouso||64' 88'|
|Coach: P. Troglio|
for J. Mendoza 59'
for F. Pereyra 70'
for M. Meza 77'
|Newcastle released Taylor and Gutierrez in same phone call|
|Alba signs new Barcelona deal|
|Benteke coy on Villa future|
|FIFA denies Valcke involvement in $10million payment|
|Rinaldi: Brazil selection never influenced|
|Pogba doing ´great things´ and will get better, says Deschamps|
|Bundesliga: Borussia Dortmund season review - Klopp endures rocky farewell|
|Adler ´aged three years´, Labbadia ´extremely proud´ of Hamburg|
|Colombia squad settles in Argentina|
|Balotelli ´a target´ because of Liverpool form - Richards|
|Bosnich: If I´d listened to Terry I would have avoided drugs|
|Luiz Gustavo ruled out of Brazil´s Copa America squad|
|Mexico confirm Copa squad|
|Pogba ´very happy´ at Juve|
|Pogba can be Europe´s greatest - Pirlo|
|Pinedo stays in Argentina, Bolivia captain Raldes in Copa America squad|
|Quinteros cuts Banguera, Hidalgo for Chile showpiece|
|Injured Gonzalez misses Copa America, Venezuela finalise youthful squad|
|Champions League Final: Buffon plays down Juve hopes, Iniesta doubtful|
|Karlsruher 1 Hamburg 2 (2-3 agg): Muller strike ensures survival|
|CONCACAF official Sanz banned by FIFA|
|Gourvennec shuns admirers with Guingamp extension|
|Pastore signs PSG extension|
|Morel swaps Marseille for Lyon|
|Watford sign Austria defender Prodl|
|Monaco confirm Berbatov departure|
|Peru v Mexico: Herrera confident as Copa preparations continue|
|Injury rules Dost out of Netherlands friendlies|
|Koeman must strengthen attack for Europa League challenge - McMenemy|
|Wilshere apologises for Spurs taunts|
|Marchisio: No fear ahead of Barcelona clash|
|Klopp to take break after leaving Dortmund|
|Champions League win would be ´more than extraordinary´ - Allegri|
|Charity calls for education after Leicester ´racist orgy´ claims|
|Taylor agrees Swansea deal|
|Sevilla snare Krohn-Dehli|
|Coloccini hails Gutierrez after ´perfect´ Newcastle finale|
|Benitez excited by Madrid opportunity|
|Sampaoli confirms final Chile squad for Copa America|
|Clement ready to go it alone at Derby|
|Mihajlovic confirms Sampdoria exit|
|Brentford turn to Dijkhuizen|
|Usami, Moto to lead Japan qualifying threat|
|Vieira ´the best bet´ for Newcastle - Bernard|
|´We´ll see what happens with my future´ - De Gea|
|Klinsmann: Guzan will start at Gold Cup|
|Alves wants Barca extension not PSG - Blanc|
|Derby appoint Paul Clement as head coach|
|Karlsruher ´can only win´ - Kauczinski|
|Ronaldinho causes stir with disallowed goal|
|Szczesny plans Arsenal stay|
|Pioli: Lazio deserve Champions League qualification|
|Pablo Aimar makes River Plate return|
|MLS Review: Seattle leave it late against Red Bulls|
|Wenger: Arsenal won´t spend big|
|Police to investigate Rangers-Motherwell fight|
|´I will definitely stay´ at City - Toure|
|Champagne backs Blatter to reform FIFA|
|Honduras 2 El Salvador 0: Penalty, goal and red card to Lozano|
|Mancini wants Icardi to stay|
|Sampdoria set to speak on Mihajlovic future|
|Serie A Review: Napoli miss Champions League in Benitez send-off|
|O´Neill: Fitness of players will determine selection against Romania|
|Inter 4 Empoli 3: Icardi brace secures victory|
|Northern Ireland 1 Qatar 1: Irish cough up lead|
|Eredivisie Review: Five-star Vitesse seal Europa berth, NAC Breda relegated|
|Motherwell 3 Rangers 0 (6-1 agg): Miserable return for McCall|
|Wilshere taunts Spurs during FA Cup parade|
|Di Francesco pens Sassuolo extension|
|Klopp thanks Dortmund for emotional farewell|
|Italy call up uncapped duo|
|Walcott expects Arsenal deal|
|Luiz dreaming of Champions League glory|
|Leicester trio issue apology as club investigate alleged ´racist orgy´|
|Gerrard ´a dream to play with´, says Sturridge|
|Clasie a target if Schneiderlin leaves - Koeman|
|Muller appears to pledge future to Bayern in Instagram post|
|Sheikh Mansour wants Toure at City - agent|
|Real vice-president inadvertently ´confirms´ Benitez appointment|
|Pique targeting Barca ´perfection´|
|Malanda helped us a lot - De Bruyne|
|Falcao not focused on transfer speculation|
|Iniesta in doubt for Champions League final|
|Blanc hoping for FFP boost|
|Willian, Filipe Luis, Cuadrado to miss Premier League start|
|Mourinho: Chelsea not playing Sydney ´for fun´|
|MLS Review: Shipp sinks Montreal, Giovinco stars for Toronto|
|Luis Enrique targets ´exemplary treble´, basks in Messi´s magic|
|Iraola: Neymar ´rainbow´ unsporting|
|Mexico 3 Guatemala 0: Herrera brace ensures farewell victory|
|´I´m not going to change the way I play´ - Neymar|
|PSG motivated by historic opportunity - Douchez|
|Wenger hopes Wembley win convinces Walcott to stay|
|Klopp refuses to dwell on departure after cup heartbreak|