By: Brandon Estrict
www.Doghouseboxing.com

Edwin Valero has officially arrived.

The Venezuelan-born Valero, headlining his first nationally televised card on Showtime, retained his WBC Lightweight Championship, stopping interim-champ Antonio DeMarco, after nine brutal rounds.

DeMarco, now 23-2-1 (17), was mercifully saved by his corner after round nine. He