TMZ has learned Barry Bonds' wife has filed for legal separation.
Bonds and Liz Watson were married in 1998. They have one daughter together. It is his second marriage.
Liz greeted Bonds when he hit his history making 755th* home run in 2007.
The papers, filed Friday in L.A. County Superior Court, cite irreconcilable differences.
Liz has requested joint legal and physical custody of their 10-year-old daughter. She's also asking for spousal support.
Story developing ...