Reggie Bush's L.A.-area mansion was nearly invaded Tuesday night ... but TMZ Sports has learned the former Heisman Trophy winner's quick actions helped stopped the crime before it really began.
It all went down at around 11 PM in Encino ... when our sources say at least one person smashed out one of the windows at Bush's multi-million-dollar home.
THE BREAK-IN KNN News
We're told the ex-USC Trojans running back was at the pad when the attempted break-in happened .