Sources say that Oksana Grigorieva is about to inch ahead of Mel Gibson in their nasty breakup battle, because she’s apparently come up with some witnesses who are willing to testify that they saw Mel beating her earlier this year.

Oksana’s 12-year-old son Alexander has already told Sheriff’s investigators that he was hiding under the bed on January 6th when Mel allegedly pulled a gun on Oksana and punched her in the face.