Nothing in the numbers separates these two by much — which is itself worth knowing, and more common than most previews admit.

Averages over the matches this snapshot has detail for — 3 for Mainz, 3 for Leverkusen. Too few to lean on heavily.

Goal involvements per 90, among players with at least 45% of the most-used player’s minutes. Drawn from the last 23 of 72 matches, not the full season.