The three Bundesliga sides with 100 per cent records can all overtake league leaders Bayern Munich this weekend.
Pep Guardiola's men dropped their first points of the season against Freiburg on Tuesday, and the trio of sides on nine points - Borussia Dortmund, Leverkusen and Mainz - will all be looking to take advantage.
Dortmund travel to Eintracht Frankfurt on Sunday, with the hosts having picking up their first points of the campaign last time out against rock-bottom Eintracht Braunschweig.
Jurgen Klopp's charges have conceded just one goal in their three-game winning run as they look to go one better than last term's second-place finish.
Dortmund's last game brought a 1-0 victory against Werder Bremen and, despite an inability to convert all their chances, the 46-year-old is pleased with his side's start to the campaign.
"If you have nine points from three games, and poor finishing is the only point of criticism, then I think I can handle it," he told the club's official website.
Leverkusen are another side to have won all their games, with an in-form Sidney Sam helping his team to a 4-2 victory over Borussia Monchengladbach with a double in their last outing.
Sami Hyypia's men will face a Schalke side buoyed by their UEFA Champions League progression and the news that striker Adam Szalai will not require surgery on a hand injury.
Fourth-place Mainz will look to the Bundesliga's leading scorer Nicolai Muller to help continue their winning streak against Hannover on the road.
Muller has netted four times so far; half the total he achieved in the whole of last season.
Hannover, managed by Mirko Slomka, have enjoyed a mixed start to their league campaign, suffering defeat against Borussia Monchengladbach either side of victories versus Wolfsburg and Schalke.
Hertha Berlin have made a strong start on their return to the top flight and will look to build on their win over Hamburg when they face Wolfsburg.
At the foot of the table, Braunschweig can pick up their first points of the season against Hamburg, a side just three places above them in the table.
Neither side have picked up a win yet, with Thorsten Fink's men shipping six goals in their last two Bundesliga matches.
Stuttgart are also without a win and sit in 17th. They face the league's top scorers Hoffenheim, who have scored 10 goals so far this season.
Sixth-place Werder Bremen will look to bounce back from their narrow defeat to Borussia Dortmund when they face Monchengladbach.
Robin Dutt's side have conceded just once this season and have been boosted by the return to training of Lukas Schmitz following a foot injury.
"What's important is that we have only conceded one goal in three matches," Schmitz told the club's official website.
"You can see the handprint of Robin Dutt, who said from the first day on that we have to have a strong order and play well in the back first.
"That has worked really well thus far and I think if we can do that throughout the whole season, it would be the foundation for a good season."
The other game of the Bundesliga weekend sees a mid-table battle between Nuremberg and Augsburg.
|Coach: A. Veh|
for C. Djakpa 66'
for J. Flum 71'
for T. Inui 83'
|Copa del Rey Wrap: Valencia scrape through, Bilbao thrash Celta|
|Primeira Liga: Maritimo 2 Braga 2|
|Galliani to stay at Milan|
|Klopp plays down Club World Cup|
|Schalke coach Keller not fearing the sack|
|Wilshere loses appeal against two-match ban|
|Zaha on Pardew´s radar|
|Milan will be my final club, says Abbiati|
|Anigo to remain at Marseille helm for time being|
|Premier League Preview: West Brom v Hull City|
|No Bankia involvement in Bale deal, says Perez|
|Galliani wants stronger Milan youth system|
|Rafinha extends Bayern contract|
|Premier League Preview: Stoke City v Aston Villa|
|Poyet: No excuse not to perform|
|Vanishing spray to be used at World Cup|
|Gabbidon praises Palace strike pair|
|Premier League Preview: Manchester United v West Ham|
|Hughton calls for Norwich City to show character|
|Premier League Preview: Fulham v Manchester City|
|Samaras attracting Lazio interest|
|Premier League Preview: Liverpool v Cardiff City|
|Rodgers backs Mackay at Cardiff|
|Foster back fit and raring for West Brom recall|
|De Boer agent denies Tottenham contact|
|Premier League Preview: Crystal Palace v Newcastle United|
|Hungary appoint Pinter as new coach|
|Iniesta signs new Barca contract|
|Rodgers coy over Suarez talks|
|Jagielka hopes for fresh faces at Everton to help top-four push|
|A-League: Central Coast 1 Wellington 0|
|Spain end top of FIFA rankings for sixth year running|
|Allardyce disappointed to draw Manchester City|
|Pascoe hails ´unbelievable´ Suarez|
|Vorm knee surgery brought forward|
|Blanc hails Cavani brace|
|Michu wants Aspas to join Swansea City|
|Hoeness plays down Bayern treble suggestions|
|Dzeko confident he can fill Aguero void|
|Moyes: No loan offers for Zaha|
|Kiessling calls for Leverkusen response|
|Matuidi: Cavani on par with Ibrahimovic|
|Yeboah set to join Borussia Monchengladbach|
|Rooney a ´chance´ to face West Ham|
|FIFA Club World Cup Preview: Bayern Munich v Raja Casablanca|
|Benzarti praises ´extremely talented´ Raja Casablanca|
|Ranieri unsure over Falcao return|
|Coupe de La Ligue Wrap: Cavani leads PSG to dramatic win|
|Copa del Rey Wrap: Real Madrid through as Sevilla crash out|
|Tottenham job appeals to Sherwood|
|Sherwood gutted after defeat|
|Hughes: United worthy winners|
|Moyes pleased to see United weather storm|
|Allardyce hails West Ham fight|
|Coppa Italia: Juventus 3 Avellino 0|
|Manchester clubs kept apart in League Cup semi draw|
|League Cup: Tottenham 1 West Ham 2|
|League Cup: Stoke City 0 Manchester United 2|
|FIFA Club World Cup: Raja Casablanca 3 Atletico Mineiro 1|
|Sheffield Wednesday, Wigan abandoned due to heavy rain|
|United face anxious Rooney wait over injury|
|Messi making good progress|
|Ramos ban overturned|
|Osvaldo charged by FA|
|In-demand Ince offered new Blackpool deal|
|Molde confirm Solskjaer approaches|
|Kramer keen to continue home record|
|Rodgers: Henderson has potential to get even better|
|Ruiz on Anderlecht´s radar|
|Swansea, Hull fined by FA over player behaviour|
|Leeds keen on re-signing Gradel|
|Leverkusen announce Ryu deal|
|Ribery named Bundesliga Player of the Year|
|Moyes: No Zaha interest|
|Barcelona, Real Madrid in European Commission investigation|
|Basel: No Tottenham approach for Yakin|
|Chelsea set for Guarin bid, agent claims|
|Lewandowski has Dortmund goal concerns|
|Pogba, Pirlo will not sign before Christmas, says Marotta|
|Guardiola convinced to join Bayern after ´meat´ and greet|
|Martinez: Everton seen as a ´perfect´ loan destination|
|Anderlecht ´perfect´ for Defour, says Van Holsbeeck|
|Watford appoint Sannino|
|Sakho feels ´lucky´ to play with Suarez|
|Lippi: Too many teams competing in Club World Cup|
|Moyes ´told Welbeck to learn from Rooney´|
|I would kill myself over match-fixing, says Gattuso|
|Hughes dismisses calls for Januzaj protection|
|Aguero ´could miss up to two months´|
|Guardiola lauds Ballon d´Or nominee Ribery|
|Liverpool open Suarez contract talks|
|Copa del Rey Wrap: Barcelona, Levante cruise through|
|A-League Preview: Derby date beckons for winless Heart|
|Pearson upbeat despite Leicester defeat|
|Poyet urges Sunderland to build on Chelsea win|
|Mourinho rues missed chances|