Hannover and Stuttgart both had a man sent off as their clash finished in a 1-1 draw on Saturday.
Cologne and Hannover shared the spoils in an entertaining 1-1 draw on Saturday evening but the result does little for either.
Paderborn came back to beat Hannover 2-1 on Sunday to break their 10-match winless streak and climb out of the drop zone.
Paderborn picked up their first win in 2015 with a 2-1 victory over Hannover.
Hamburg made it two wins in a row to pull away from immediate relegation danger by beating Hannover 2-1.
Bayern Munich failed to win for the second match in a row as they were held to a 1-1 draw by Schalke at the Allianz Arena.
Mainz continued their bright start to 2015 with a 1-1 Bundesliga draw at Hannover on Tuesday evening.
Borussia Dortmund slipped back to the bottom of the Bundesliga despite picking up a point in their goalless draw at Bayer Leverkusen.
Schalke beat Hannover 1-0 but lost Klaas-Jan Huntelaar to a red card at the Arena AufSchalke on Saturday.
Hoffenheim brought a spectacular end to their 2014 with a 5-0 Bundesliga victory at Hertha Berlin on Sunday.
Freiburg let a two-goal lead slip to draw 2-2 against Hannover and remain rooted to the foot of the Bundesliga.
Former Germany forward Mike Hanke has retired at the age of 31, saying he has lost his appetite for the game.
Bayern Munich continued their unbeaten start to the Bundesliga season with a 2-0 win over Freiburg on Tuesday night.
Hannover got back to winning ways at home with a 2-0 win over Augsburg, who have now lost two in a row.
Bayern Munich went 10 points clear in the Bundesliga with a 4-0 win over Augsburg, while Dortmund lost to Hertha Berlin.
Werder Bremen and Hannover shared six goals in a northern Germany derby which ended in a 3-3 draw.
Bayern Munich remain seven points clear at the top of the Bundesliga after a 1-0 home win over Bayer Leverkusen.
Wolfsburg kept up the pressure on Bayern Munich at the top of the Bundesliga with a 3-1 victory at Hannover.
Hoffenheim got back to winning ways on Saturday with a 4-3 win over Hannover, which took them to seventh in the Bundesliga.
Bayer Leverkusen climbed above Hannover and up to fourth in the Bundesliga with a 3-1 win at the Niedersachsenstadion.
Where will the Capital One Cup final be won and lost? We pick out Sunday’s key battles.