Hm, I'll keep testing but I think he failed to lay when he had a chance to do it in the Leverkusen - W Bremen game.
It made a back bet on the W.Bremen when the game was 2-2, I believe.
Then, Leverkusen makes the 3-2, at 73 minutes.
Therefore, a lay bet should've been made in leverkusen and it wasn't.