MainzvsBayer Leverkusen

Bundesliga round five brings Mainz and Bayer Leverkusen to the MEWA ARENA, with the table figures here taken from the 2025-26 season rather than the current one. Leverkusen finished that campaign sixth on 59 points, 19 clear of Mainz's tenth-place 40, and the model gives the visitors a 53.1% win probability. The projected scoreline is 1-2.

Mainz's 2025-26 season produced 44 goals scored and 53 conceded across 34 matches, rates of 1.29 and 1.56 per game and a minus-nine differential. Their attack ranked 12th of 18, the defence 7th, and the win rate was 29.4%. The five-match run before the break reads WLWDW at an average of 3.8 goals scored and 1.2 conceded — well above their season scoring rate, so it is a short sample rather than a new baseline.

Leverkusen scored 68 goals in 34 games, 2.00 per match, ranking fourth in the division, while 47 conceded ranked third for a plus-21 differential and a 50% win rate. Their recent five-match sequence reads WDWLW, averaging 2.8 scored and 1.0 conceded. The season's closing form line in the table was DLWWL.

Four meetings are on record and Mainz have not won any of them: two draws and two defeats. Those games produced 14 goals, 6-8 on the head-to-head count, an average of 3.5 per meeting — but two of the four finished with two goals or fewer, so the aggregate should not be read as a guarantee of a high-scoring game. The most recent meeting, on 28 February 2026, finished 1-1.

Mainz's home record across their last 20 is 7W 6D 7L, with 1.45 scored and 1.35 conceded per game — a better defensive rate than their season figure of 1.56 — and a home win rate of 35% against 29.4% overall. Leverkusen's away split is the weaker part of their profile: 8W 4D 8L, 1.55 scored and 1.45 conceded, and a 40% win rate away versus 50% overall.

Both sides have had three weeks since their last outing, Mainz on 21 days' rest and Leverkusen on 20, so turnaround offers no meaningful edge either way. Leverkusen's three most recent fixtures came against an average opponent rank of 7.7, tougher than Mainz's 11. The 2025-26 table remains the only full-season evidence available; five rounds of the current campaign are too small a base to override it.

The Poisson model expects 1.52 goals for Mainz and 2.20 for Leverkusen, a 1-2 scoreline, and about 3.71 goals combined. It puts two or more goals at 88.5%, three or more at 71.6% and four or more at 50.8%, with a 69.4% chance that each side scores at least once. The single most likely exact score is 1-2 at 8.9%, ahead of 1-1 at 8.1%, and the margin distribution is decisive rather than tight: away by two or more is the largest band at 32.2%, against 20.9% for an away win by one and 20.5% for a draw. Confidence is rated high.

The table data, the head-to-head record and the model all point the same way, with Leverkusen at 53.1% and a projected margin band of two or more goals carrying close to a third of the model's weight. Mainz are stronger at home than their overall numbers suggest, and a 26.4% home win probability is not negligible, so the projection would be overturned if the home side reproduced that better home scoring rate. Mainz's record of no wins in four attempts against this opponent is the fact that most plainly supports the model.