Racing Club and Velez Sarsfield preserved their perfect starts to the Argentina Primera Division, while Boca Juniors left it late.
Luciano Lollo and Facundo Castillon were on target as the 10 men of Racing Club upstaged Copa Libertadores champions San Lorenzo 2-0 on matchday two on Sunday.
It was a similar story for Velez Sarsfield, who accounted for Arsenal 2-1 courtesy of Lucas Pratto and Ivan Marcone's own goal.
Racing Club and Velez Sarsfield are the only two teams to have won their opening two games and sit two points clear atop the table in Argentina.
Godoy Cruz, River Plate and Newell's Old Boys are all locked on four points.
Godoy Cruz scored two goals in the final three minutes to salvage a 2-2 draw at Quilmes, River Plate downed Rosario Central 2-0 and Newell's Old Boys drew 1-1 with Gimnasia La Plata.
San Lorenzo were crowned champions of South America last week after they defeated Paraguayan outfit Nacional to win the Copa Libertadores for the first time.
But San Lorenzo, who had their opening game rescheduled due to cup commitments, were given a wake-up call as Racing Club emerged triumphant at the Estadio Presidente Juan Domingo Peron.
Just as the half was set to end all-square, defender Lollo - a new recruit from rivals Belgrano - popped up to open the scoring in the 45th minute, rising highest to head the ball beyond goalkeeper Sebastian Torrico.
The home side were reduced to 10 men in the 80th minute after striker Gabriel Hauche was shown a straight red card but despite their numerical disadvantage, Racing Club sealed the points in the second minute of additional time thanks to substitute Castillon, who turned his defender and lofted the ball over Torrico.
At the Estadio Jose Amalfitani, Velez Sarsfield wrapped up proceedings inside an hour against Arsenal.
Pratto got the ball rolling in the sixth minute after tucking away a rebound from close range.
The home side went two goals ahead 11 minutes into the second half thanks to Arsenal defender Marcone, who bundled the ball into his own net.
Arsenal striker Emilio Zelaya did poke home a goal in injury time but it was nothing more than a consolation.
Emmanuel Gigliotti netted a 90th-minute winner as Boca Juniors overcame Belgrano 1-0 on Sunday.
Boca Juniors lost their opening match but an unmarked Gigliotti directed his header past Juan Olave in the third minute of added time to give the 30-time champions their first win of the season.
In other results, an 84th-minute own goal from Gaspar Servio handed Defensa y Justicia a 3-2 win over Banfield.
Jonathan Blanco converted two first-half penalties as Olimpo defeated Tigre 2-1.
Estudiantes were 1-0 winners at home to Independiente, while Atletico Rafaela prevailed 2-1 against Lanus.
|Coach: D. Cocca|
for M. Acuña 64'
for D. Milito 73'
for G. Díaz 89'
|Hodgson optimistic for England´s future|
|Milan chief Galliani targets Champions League|
|Hull recall Ince and Figueroa|
|Stranzl extends Gladbach stay|
|Redknapp not ruling out Morrison return|
|Barnes hopeful of keeping his place|
|Lambert hails ´outstanding´ Okore|
|Kramer pens Leverkusen extension|
|Lacazette will not rest on laurels|
|Hughes: Chelsea can win quadruple|
|Ramos: No rush on contract talks|
|Johnson: Derby winner one of my finest hours|
|Liverpool are turning the corner - Lallana|
|Juan credits Mancini for Inter revival|
|Allardyce eyeing London derby success|
|Juanfran targets new-year push|
|Long slams Southampton critics|
|Guidetti out, Griffiths in hints Deila|
|Spurs forward Kane targets 20 goals|
|Lyon fitness key to Bordeaux thrashing - Fournier|
|Santa Fe 1 Medellin 1 (agg 3-2): Hosts win Clausura title|
|Emelec 3 Barcelona 0 (4-1 agg): Bolanos brace seals title defence|
|Pioli: Lazio did not switch off|
|Gignac: Marseille lead ´a huge boost´|
|No Park in South Korea´s Asian Cup squad|
|Simeone applauds Griezmann´s hat-trick|
|Redknapp vows to keep QPR sharpshooter Austin|
|Santiago Wanderers 1 Palestino 6 (agg 2-9): 36-year drought ends for visitors|
|Juan Aurich 2 Sporting Cristal 3 (aet, agg 4-5): Chavez hands visitors Peruvian title|
|Liga del Futbol Profesional Boliviano Review: Bolivar win title|
|Mancini plays down Lennon transfer rumours|
|Ligue 1 Review: Marseille end 2014 top of the table, Lyon leapfrog PSG|
|Kovacic has mixed emotions after Inter draw|
|Serie A Review: Lazio go third despite Inter rally, Sampdoria held|
|La Liga Review: Griezmann the man for Atleti, Villarreal gain fifth straight win|
|Primeira Liga Review: Benfica win six straight|
|Athletic Bilbao 1 Atletico Madrid 4: Griezmann hat-trick seals comeback win|
|Inter 2 Lazio 2: Hosts rally to claim draw|
|McCoist makes Rangers exit|
|Sturridge on course for January return - Rodgers|
|Liverpool getting back on track, says Rodgers|
|Wenger bemoans failure to defend set-pieces|
|Bundesliga Review: Hoffenheim enjoy big win, Freiburg falter late on|
|Zorc: Dortmund to stick with Klopp|
|Liverpool 2 Arsenal 2: Bandaged Skrtel rescues a draw|
|I have no problem with Payet, insists Bielsa|
|Eredivisie Review: Ajax leave it late, Vitesse finally win|
|Pardew rues over-zealous Newcastle approach|
|Benitez hopeful ahead of Supercoppa|
|I nearly took Johnson off - Poyet|
|Johnson revels in derby late show|
|Juventus must maintain focus, warns Allegri|
|Newcastle United 0 Sunderland 1: Johnson settles derby|
|Carlos leaves Sivasspor post|
|Dundee United 2 Celtic 1: Ciftci inspires surprise win|
|Mourinho against use of independent panels|
|Hartlepool not interested in signing Evans|
|Reed delighted with first Southampton start|
|Bremen agree Oztunali loan|
|Irvine backs Ideye to end goal drought|
|Carrick backs Falcao to kick on|
|Dortmund will come back stronger, vows Klopp|
|Bojan senior slams Barcelona|
|Eredvisie title not won yet - Depay|
|Sterling eager to catch Arsenal cold|
|Monk: Ki will be sorely missed|
|Bruce looking to recall Hull duo from loan spells|
|Allardyce: Pearson deserves time|
|Sydney 0 Wellington Phoenix 2: Burns at the double|
|Real Madrid 2 San Lorenzo 0: Spanish giants complete triumphant 2014|
|McCoist: Departures sucking life out of Rangers|
|Hargreaves urges Sterling to stay put|
|Herediano 1 Deportivo Saprissa 1 (agg 3-5): Draw hands visitors consecutive titles|
|Tribulietx basks in Auckland City´s heroics|
|San Lorenzo´s Bauza applauds Ancelotti|
|Wenger: Sanchez a Footballer of the Year candidate|
|Chelsea like United´s treble-winning team - Hargreaves|
|Ancelotti: Copa del Rey victory inspired Real´s stunning run|
|La Liga Review: Catalan clubs triumph|
|Milan on right track - Inzaghi|
|Estoril 1 Vitoria Guimaraes 0: Kleber checks visitors´ momentum|
|Eredivisie Review: PSV in Eagles demolition, AZ downed at home|
|Garcia fumes at missed handball|
|Serie A Review: 10-man Milan frustrate Roma, Cesena rescue point|
|Roma 0 Milan 0: Hosts denied despite Armero red|
|Ligue 1 Review: PSG held at home, Monaco claim fourth win in a row|
|Bundesliga Review: Bremen off bottom with Dortmund win, Augsburg beat Gladbach|
|Blanc frustrated after drab stalemate|
|League Two Review: Moore´s Hartlepool tenure begins with draw|
|Championship Review: Blackpool hit for six, Middlesbrough slip up|
|Luis Enrique enjoying Pedro´s resurgence|
|Scottish Premiership Review: Aberdeen move to second, St Mirren misery continues|
|Koeman delighted with clinical Southampton|
|Pochettino tips in-form Kane for England call-up|
|Dortmund are ´idiots´ - Klopp|
|Allardyce hails ´outstanding´ Downing|
|Young admitted fault after Agbonlahor dismissal, says Lambert|
|Pearson not concerned with speculation|
|Bruce: Hull simply not good enough|
|Everton must improve - Martinez|
|Irvine rues sloppy defending|
|Cruz Azul 1 Auckland City 1 (2-4 on pens): Plucky New Zealanders claim third|
|Austin an example for young strikers - Redknapp|
|Dyche takes pride in White Hart Lane defeat|
|Arabian Gulf League Review: Al Shabab strike late to sink Al Dhafra, top two win|
|Swansea win vindicated changes, says Monk|
|Van Gaal frustrated by dropped points at Villa|
|Paris Saint-Germain 0 Montpellier 0: Champions frustrated by Courbis´ men|
|League One Review: Wilson gains landmark win as Bristol City and Swindon falter|
|Hull City 0 Swansea City 1: Monk´s men celebrate rare away win|
|Southampton 3 Everton 0: Koeman´s side back to winning ways|
|Aston Villa 1 Manchester United 1: Visitors held despite Agbonlahor dismissal|
|QPR 3 West Brom 2: Austin treble lifts hosts out of drop zone|
|Barcelona 5 Cordoba 0: Suarez opens Liga account in emphatic win|
|Tottenham 2 Burnley 1: Lamela stunner wins it for Spurs|
|West Ham 2 Leicester City 0: Carroll, Downing seal the points|
|Werder Bremen 2 Borussia Dortmund 1: Hosts off the bottom by adding to Klopp´s woes|
|Kerala Blasters 0 Atletico de Kolkata 1: Last-gasp Rafique seals inaugural title|
|Warnock fumes over disallowed goal|
|Pellegrini hails Silva quality|
|Betis announce Mel return|
|Huntelaar signs Schalke extension|
|Juventus v Napoli: Allegri backs Tevez to make difference|
|Stoke City v Chelsea: Mourinho calls for adaptability|
|Manchester City 3 Crystal Palace 0: Silva strikes twice as champions go joint-top|
|A-League Review: City snatch Melbourne derby honours, Glory pull further clear|
|Mancini: Inter can finish third|
|Sterling revels in Golden Boy award|
|Pellegrini: You never win a title in December|
|Rodgers bemoans Sanchez snub|
|Ayew confident Marseille can beat title rivals|
|Mercier: San Lorenzo won´t roll over to Real Madrid|
|Lukaku: I´m still 21|
|Mainz bemoan ´tragic´ loss to Bayern|
|Rojo ruled out for Villa trip|
|Lopetegui thrilled with Porto response|