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'
|Lacazette to ponder Lyon future|
|Griezmann lauds ´world class´ Aubameyang|
|Sporting´s in-demand Gelson going nowhere, claims agent|
|FA appoints new lead QC as scope of child sexual abuse review is outlined|
|Hodgson: England players failed to grasp my instructions|
|Xhaka pleads for time to settle in at Arsenal|
|Kluivert urges PSG to learn from Montpellier humbling|
|Augenthaler tips Bayern captain Lahm to play on|
|Rodgers: Celtic growing in confidence in Europe|
|Brazil-Colombia friendly proposed to raise money for Chapecoense|
|If you don´t play, you can´t shine - Hummels urges Mourinho to believe in Mkhitaryan|
|Ronaldinho ready to help Chapecoense|
|United can still finish top four - Guardiola|
|Bale´s ankle ´feeling better every day´|
|Sarri: Napoli in Lisbon to win|
|Watford and West Brom hit with FA charge|
|Karanka delighted with Boro´s game management|
|Middlesbrough 1 Hull City 0: Ramirez sinks sorry Tigers|
|Can Arsenal break the Basel curse? The Champions League in Opta Numbers|
|Everton confirm serious knee injury for Bolasie|
|Stam set for Old Trafford reunion in FA Cup third round|
|Sanchez, Ozil contract talks not just about money - Wenger|
|It is normal my son says I´ll coach Inter, I will - Simeone|
|Chapecoense confirmed as Copa Sudamericana champions|
|Sullivan backs Bilic to reverse Hammers´ fortunes|
|It was close...very close - Hummels reveals level of Man United interest|
|What You Might Have Missed: An FA Cup comeback of all comebacks and Monaco can´t stop scoring|
|Preston fans to be refunded from Beckford, Doyle fight fines|
|In-demand Lindelof ´happy to stay at Benfica´|
|FA charges City and Chelsea for late fracas|
|Darmstadt sack coach and sporting director after dismal run|
|Anyone who says they would not sign Messi is a liar! - Caballero|
|Roberto warns Madrid: Barcelona will cut the gap|
|Emery: Champions League top spot was always PSG´s priority|
|Guardiola brands Sanchez transfer rumours as lies|
|Boateng ruled out of Bayern´s clash with Atletico|
|FA confirms four-game ban for Aguero|
|Blatter FIFA ban remains after CAS dismisses appeal|
|Luis Enrique: I don´t give a damn about beating Gladbach|
|Emre hits out at Allardyce´s style... and slams his chewing gum|
|Bravo the world´s best goalkeeper, says Pellegrini|
|Ibrahimovic: I know how to kick someone and make him fall asleep|
|Barcelona and Real Madrid would not win 5-0 in Ligue 1 - Verratti|
|Seedorf out, Eriksson in at second-tier Chinese club|
|Tevez to China? Shanghai Shenhua claim ´breakthrough´ in talks|
|´English football is not more pure´ – Pochettino will not slam Alli for ´dive´|
|Gudjohnsen offers his services to Chapecoense|
|Savicevic: Champions League qualification paramount for Milan|
|Wenger: West Ham could take two years to settle|
|River Plate play in green as tribute to Chapecoense|
|Roberto Carlos open to coaching in A-League|
|Wenger confident there is more to come from Arsenal|
|Kane wants to see out career at Tottenham|
|Aguero challenge labelled ´crazy´ by disappointed Cahill|
|Mourinho ´has nothing to hide´ over tax affairs|
|Guardiola happy despite City setback|
|Ibrahimovic: I tried to avoid Coleman|
|Pogba hits out at ´distorted´ holiday claim|
|Nice 3 Toulouse 0: Plea strikes again as hosts go top|
|In-demand Belotti extends Torino stay|
|Mourinho defends decision to bring on Fellaini|
|Man Utd performances much better under me, says Mourinho|
|Draw the least Everton deserved against Manchester United, says Koeman|
|Mourinho fumes at media double standards|
|Mourinho has ´no thoughts´ on Fellaini penalty incident|
|Neville unimpressed by ´idiotic´ Fellaini|
|Manchester United are the Premier League´s worst team for dropping points with late goals|
|Manchester United mocked after Fellaini congratulations|
|´We have to put it right´ - Jones frustrated as United lose another late lead|
|Lulic sparks racism storm with Rudiger insult|
|Everton 1 Manchester United 1: Late Baines penalty denies Mourinho|
|Eto´o prefers Iniesta to Ronaldo and Messi: He deserves four Ballons d´Or|
|Liverpool join unfortunate group after Bournemouth collapse|
|Strootman praises Roma´s mental strength after derby win|
|Comeback win over Liverpool a special day for Bournemouth - Howe|
|Liverpool stopped playing football in Bournemouth collapse - Klopp|
|Lazio 0 Roma 2: Strootman and Nainggolan continue Giallorossi dominance|
|Bournemouth hero Ake hails incredible comeback win over Liverpool|
|Montella hails Lapadula´s ´fairytale´ rise to AC Milan stardom|
|Beautiful football is Guardiola´s Bayern legacy - Rummenigge|
|Bournemouth 4 Liverpool 3: Stunning comeback leaves Klopp´s men reeling|
|Lopes set for several weeks of treatment on ´sound trauma´|
|Lapadula: This is just the start of my Milan journey|
|AC Milan 2 Crotone 1: Lapadula winner spares Niang´s blushes|
|Torres fit for Bayern Munich clash|
|Dortmund´s Sahin fears eased|
|Eto´o: Guardiola still the best coach in the world|
|Carvajal apologises for swearing at Barcelona fans|
|MP calls for examination of Mourinho tax avoidance allegations|
|A-League Review: Sydney go six points clear at top as Adelaide clinch first win|
|Referee sorry amid fall-out from Werner dive controversy|
|Pique taking inspiration from 2014-15 turnaround|
|Aulas: Lyon should be awarded win after Metz clash is abandoned|
|Emery: PSG must learn from defeat|
|Marotta: Best to laugh at Pogba comments|
|Mourinho: I´m bringing back Manchester United DNA|
|De Boer: Nobody in charge at Inter|
|Chapecoense to be named Copa Sudamericana champions - Tozzo|
|Bilic: We are in a relegation fight|
|Aubameyang: I don´t know if I´ll be at Dortmund next season|
|Goals will return for Higuain, says Allegri|
|Southgate hopes to convince Zaha to play for England|
|Simeone will go to Inter, says son Giovanni|
|Watford fan dies after falling ill during West Brom clash|