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'
|Bilic: Cup run will help in Premier League|
|Pjaca out for up to three weeks|
|Trophies still the focus for Guardiola|
|Mignolet wants ´fair´ Karius battle|
|Ancelotti impressed by motivated Bayern|
|West Ham ´unreservedly condemn´ crowd trouble|
|Allegri praises strike duo after win over Sampdoria|
|De Boer praises two-goal Icardi after vital win|
|Chelsea were ´unlucky´ with missed chances, insists Conte|
|Mourinho: I´ve never had fans like these|
|Nacho´s goal better than my Champions League final volley - Zidane|
|Borussia Dortmund 1 Union Berlin 1 (aet, 3-0 pens): Weidenfeller shootout heroics seal progress|
|Bilic: Crowd trouble distracts from great West Ham win|
|Kompany told me he couldn´t play anymore - Guardiola|
|Liverpool and Manchester United handed home quarter-finals|
|Inter 2 Torino 1: Icardi double alleviates pressure on De Boer|
|Manchester United 1 Manchester City 0: Mata extends Guardiola´s winless run|
|West Ham 2 Chelsea 1: Crowd trouble tarnishes Hammers´ route to quarter-finals|
|Cultural Leonesa 1 Real Madrid 7: Morata and Asensio star in BBC´s absence|
|Bayern Munich 3 Augsburg 1: Green´s first goal sends holders through|
|Juventus 4 Sampdoria 1: Rapid start sets champions on their way|
|Crafty Suarez is world´s best striker - Godin|
|Mancini: Balotelli has wasted years but can bounce back|
|Rami rejected ´risky´ PSG move|
|Neymar would have cost PSG €430m, claims father|
|Sacchi warns Bayern players over Ancelotti temper|
|Valencia ´pleased´ with RFEF bottle ruling|
|Mourinho apologises to Utd fans for Chelsea thrashing|
|Barcelona lash out at ´totally reprehensible´ RFEF comments|
|Jacob leaves Marseille amid rumours of Zubizarreta appointment|
|Lavezzi added to Argentina squad as Dybala drops out|
|Del Bosque: Mourinho had a point on Conte|
|N´Zonzi in talks over Sevilla extension|
|Allardyce successor ´will not be a mercenary´ - Glenn|
|Aubameyang like a rocket, Lewandowski perfect - Riedle|
|RFEF fines Valencia, warns Barca over bottle incident|
|Wenger tells Iwobi to improve his finishing|
|Barcelona without Mathieu for three weeks|
|Kimmich draws inspiration from Xavi|
|Vazquez signs new Madrid deal|
|Higuain the best striker in the world - Nedved|
|Wolfsburg regret De Bruyne, Perisic sales|
|Parejo slams Neymar for ´inciting´ Valencia fans|
|Gundogan predicts ´very lively´ Manchester derby|
|Luis Enrique satisfied with Supercopa workout|
|Messi could join Newell´s after World Cup - Maxi Rodriguez|
|Ibrahimovic wants United to be the boss of City|
|Schmidt on the bus as Lotte book ticket for next round|
|Pogba still adapting to Premier League, says Mourinho|
|Southgate hails influence of demoted Rooney|
|Lille ready to heap more pressure on PSG as Corchia dreams big|
|I´m among top 20 LaLiga coaches, jokes Luis Enrique|
|Brattan earns Socceroos call-up|
|Pochettino pleased with Janssen|
|Klopp never questioned Sturridge quality|
|Barcelona downed by Espanyol in Supercopa|
|Heavy Milan defeat ´just a bump in the road´ - Montella|
|Pochettino wanted Liverpool debutant sent off|
|Klopp happy to entertain as Liverpool youngsters earn their spurs|
|Leverkusen dumped out by 10-man minnows|
|Wenger praises Oxlade-Chamberlain work ethic|
|Wenger praises Oxlade-Chamberlain work ethic|
|Tuchel unaffected by Real Madrid rumours|
|I would like to pick Toure, believe me - Guardiola|
|Genoa 3 AC Milan 0: Unbeaten run comes crashing to an end as Paletta sees red|
|Liverpool 2 Tottenham 1: Sturridge at the double to book quarter-final spot|
|Arsenal 2 Reading 0: Oxlade-Chamberlain brace secures safe passage|
|Football world mourns Carlos Alberto|
|81 per cent win ratio and more goals than Bayern Munich - Two years of Messi, Suarez and Neymar|
|Ridgewell reportedly arrested for drink driving|
|Verratti not leaving PSG - agent|
|Costa competition benefitting Batshuayi, says Conte|
|Pele hails ´friend and brother´ Carlos Alberto|
|Bailly confirms two-month lay-off|
|How Carlos Alberto established his legacy as one of the greats|
|Allegri hints at Marchisio return|
|Lewandowski has not renewed with Bayern - agent|
|Carlos Alberto: Capita´s World Cup triumph in numbers|
|Hull´s Snodgrass out for a month|
|Keita reveals Arsenal, Manchester City, Liverpool snub|
|Mikel not giving up on Chelsea career|
|Former Brazil captain Carlos Alberto dies|
|Guardiola wants to help ´special player´ Aguero|
|Roma welcome back Strootman, Rudiger for Sassuolo clash|
|Wolves confirm Zenga dismissal|
|Bruce lauds Rooney as a world ´great´|
|Raiola made €27m on Pogba move, reveals Juventus director|
|Dortmund injury woes worsen with Aubameyang|
|De Bruyne out of Manchester derby|
|Conte: I always show respect to opponents|
|FIFA fines RFEF over Madrid, Atletico breaches|
|Pedro backs Conte amid Mourinho spat|
|Big clubs would fight for Edwards if he was Brazilian - Pochettino|
|They boo Ronaldo, they booed me as well - Zidane|
|De Boer fed up of sacking talk|
|Neuer: Bayern have no room for error|
|Bilic praises Conte´s ´aggressive´ demeanour|
|Di Maria will bounce back - Motta|
|EFL opens investigation into Watford over ´forged´ bank letter|
|Hummels admits RB Leipzig a serious threat for Bayern|
|Pedro reveals Barcelona talks|
|De Bruyne: I have no problem with Mourinho|
|Casillas: I have not retired from Spain duty|
|Raul backs under-fire Ronaldo for Ballon d´Or glory|
|Mourinho and United must lower expectations - Xavi|
|Hands off! Milan CEO insists Donnarumma will stay|
|Glory coach Lowe accepts ban|
|Scolari extends contract with Guangzhou Evergrande|
|Guardiola eliminated City doubts - De Bruyne|
|Klopp lauds Ings for ´perfect´ response|
|Wenger: Perez needs to take chance|
|Boys to men: Mourinho challenges United players|
|Kompany committed to bargain with City medics|
|´Insipid´ Hazard overlooked for Ballon d´Or|