Nacional Asuncion defeated Cerro Porteno 1-0 to jump into second in the Paraguay Division Profesional, as Libertad won again.
Libertad maintained their unbeaten start to the Paraguayan top tier with a 5-1 thrashing of Deportivo Capiata on Monday but finished round four with a new main rival at the top of the table, as Nacional leapfrogged Cerro Porteno on Saturday.
With Libertad set to play the final match of the round, both Cerro Porteno and Nacional had the opportunity to claim a temporary lead in Paraguay when they faced off at the Estadio General Pablo Rojas.
Cerro Porteno had won the past three matches between the two teams and had yet to suffer defeat in the Division Profesional's 2014 Apertura campaign.
But after a goalless first half, Nacional scored the only goal of the game six minutes into the second period with Julian Benitez getting free in the penalty area to send a diving header past the home side's goalkeeper Diego Barreto.
The victory took Nacional to nine points, while Cerro Porteno (seven points) slipped to third.
In Capiata, Libertad moved ahead of Nacional by a point to regain top spot after a stunning first half set up their victory over the hosts.
Jorge Recalde, Gustavo Gomez and Claudio David Vargas all scored in the first half for Libertad, while Rodrigo Lopez and Ivan Ramirez struck in the opening eight minutes after the break to give the visitors a five-goal lead.
While Cristian Andersen scored for Capiata in the 70th minute, Libertad were always in control and made it three wins and a draw from four games so far this season.
Rubio Nu moved to fourth spot on Sunday, level with Cerro Porteno on points, goal difference and goals scored, after a 2-1 win against Olimpia.
In a bad start for Pablo Caballero's Rubio Nu side, Olimpia took the lead in the 15th minute through Esteban Ramirez's penalty but the hosts equalised just after the half-hour mark thanks to Claudio Correa's header.
Correa was the hero for Rubio Nu in the second half as he scored the winner in the 71st minute, running onto a through ball before firing a left-footed shot into the net.
In other results, Guarani crushed Sportivo Luqueno 4-1, Sol de America cruised to a 3-0 victory against 12 de Octubre and 3 de Febrero held General Diaz to a 1-1 draw.
|Coach: F. Arce|
|MLS Review: Sounders return to winning ways|
|Klinsmann unhappy with USA performance|
|High hopes for Paraguay - Diaz|
|Gareca: More to come from Peru|
|Gerrard had European offers|
|Argentina out to spoil Chile´s party - Martino|
|Sampaoli: Chile won´t change style|
|Di Maria will come good at United - Rojo|
|Peru 2 Paraguay 0: Gareca´s men finish third at Copa|
|United States 4 Guatemala 0: Klinsmann´s men win comfortably|
|´I’d prefer no-one to know my name´ - Bassett|
|Matthews completes Sunderland move|
|Podolski set for Galatasaray medical|
|Gundogan inspires Dortmund victory|
|Inter confirm Montoya capture|
|Murillo joins Inter, as Kuzmanovic and Obi depart|
|Falcao signing not a risk, says former Chelsea star|
|Deeney agrees new Watford deal|
|Confidence and service the key to Falcao success at Chelsea|
|No bids for ´Chelsea target´ Baba, claim Augsburg|
|Derby swoop for Ince|
|Fiorentina consider legal action over Salah ´no-show´|
|Chelsea the team to beat in the Premier League, says Neville|
|Storari exits Juve for Cagliari|
|UEFA removes FFP restrictions on Man City and PSG|
|West Brom hope for new owners within the month|
|Chelsea agree loan deal for Falcao|
|Kuyt eyes trophies on Feyenoord return|
|Chile v Argentina: History beckons ahead of Copa America final|
|Wallace extends Monaco loan|
|Mihajlovic wants to instill fear factor at Milan|
|Mignolet improving at Liverpool - Grobbelaar|
|Mumbai City name Anelka player-manager|
|Olivia the parrot predicts Japan to win Women´s World Cup|
|Lusitans coach blasts Bilic´s ´lack of respect´|
|Sakho eyes more Europa League wins|
|Gareca wants Peru to keep building|
|Chile ´no chance´ if Argentina produce their best - Diaz|
|Ocampos joins Marseille permanently|
|Europa League Review: Cloud-nine Brondby ignite opening round|
|West Ham 3 Lusitans 0: Sakho nets twice at start of Europa League journey|
|Holebas makes Watford move|
|Milan secure Adriano signing|
|Peru v Paraguay: Diaz counts cost of semi-final loss|
|Bastia hit out at reports of extra debt|
|Hernandez has successful surgery|
|Odemwingie signs one-year Stoke extension|
|Uth signs for Hoffenheim|
|Henen seals Everton return|
|Cattermole pens long-term Sunderland deal|
|United States v Guatemala: Klinsmann backs Dempsey ahead of Gold Cup warm-up|
|West Ham working on Jenkinson return - Gold|
|Milan agree deal for Bacca|
|Real buy back Vazquez from Espanyol|
|Richards leaves Swansea for Fulham|
|McShane signs for Reading|
|Giggs tells youngsters to seize US chance|
|Hammond pens Leicester extension|
|Only Schweinsteiger can decide Bayern future - Guardiola|
|Cech plans to play until he´s 40|
|Montoya arrives in Milan ahead of Inter move|
|Hernandez out of Gold Cup|
|US asks Switzerland to extradite seven FIFA officials|
|MLS Preview: Sounders seek momentum switch|
|Mexico 0 Honduras 0: Hernandez injury sours friendly|
|Hernandez taken to hospital|
|Garay in doubt for Copa America final|
|Wambach: USA peaking for World Cup final|
|Bassett ´an absolute hero´ despite own goal - Sampson|
|Japan 2 England 1: Late own goal breaks English hearts|
|Salvo quits as Valencia president|
|Costa not Ribery cover - Bayern director Sammer|