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Bundesliga Predictions - 21 December 2025, Matchday 15

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Last updated: 1 hour ago

In a recent round of matches, Mainz pulled off a significant victory over St. Pauli, displaying impressive skill and strategy. Meanwhile, Bayern Munich showcased their dominance on the field by securing a win-to-nil against Heidenheim. These matches highlighted the competitive nature of the league, as teams battled intensely for crucial points. Mainz’s triumph over St. Pauli and Bayern Munich’s clear victory emphasized their tactical prowess, offering fans an exciting weekend of football.

Simon Lewis 1 hour ago
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  • All three sides in the drop-zone are in action on Sunday.
  • It’s an early relegation shootout between Mainz and St. Pauli.
  • Second-bottom Heidenheim take on leaders Bayern Munich.
Mainz
Nelson Weiper of Mainz against Samsunspor FC (Getty Images).

Bundesliga Predictions - Matchday 15


Mainz vs St. Pauli


Two sides in the dropzone cross swords in a match both will be desperate to win as the match offers the chance for a six-point swing in the relegation battle. Last season Mainz beat St. Pauli in both their matches, cranking up five goals to nil across the two clashes. This season they have both lost nine of their 14 matches in the Bundesliga, but the difference is in the wins - St. Pauli have three, while Mainz have just the one victory. 

Both sides are undefeated in their last three matches, but St. Pauli have lost six of their last 10, while Mainz have four defeats in 10. St. Pauli have lost five of their last seven on the road, while Mainz have won three, drawn two and lost two of their last seven at home.

Considering Mainz pulled off a 2-2 away draw against leaders Bayern Munich, followed by a win in Europe mid-week, I’m backing the home side to snatch the three points in a tight, low-scoring affair.

Heidenheim vs Bayern Munich


Heidenheim and Bayern have met five times in the past, with Bayern netting four or more goals in a match four times in each of their four wins. The other match was won 3-2 by Heidenheim towards the end of the 2023/24 season. Bayern have lost just one of their last 27 matches, winning 24 and drawing two. 

Their single loss was a 3-1 away defeat to high-flying Arenal, but their last match saw them draw 2-2 at home to bottom-of-the-table Mainz after a four-match winning streak. Bayern have lost two and draw one of their last 15 matches on the road, while Heidenheim’s home form is disastrous. 

Heidenheim have lost five, drawn two and won three of their last 10 home matches, so there’s little to suggest they might have the edge over Bayern. With their goal difference of plus-40, I see Bayern bouncing back with a big win against a Heidenheim side with the worst goal difference in the Bundesliga (minus-17).

Bundesliga table (as at 19 December 2025)


PosTeamPldWDLGDPts
1Bayern Munich1412204038
2Borussia Dortmund159511432
3RB Leipzig149231329
4Bayer Leverkusen148241126
5TSG Hoffenheim14824926
6VfB Stuttgart14815325
7Eintracht Frankfurt14734024
8Union Berlin14536−418
9SC Freiburg14455−217
101. FC Köln14446−116
11Borussia Mönchengladbach15447−616
12Werder Bremen14446−1016
13VfL Wolfsburg14437−415
14Hamburger SV14437−915
15FC Augsburg14419−1113
16FC St. Pauli14329−1311
171. FC Heidenheim14329−1711
18Mainz 0514149−137

Verdict

Mainz to pull off a valuable win over St. Pauli, while Heidenheim to suffer at the hands of Bayern Munich.
    
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