Westlake scored four runs in the bottom of the seventh and beat Santa Barbara High 4-3 at the Chatsworth Tournament on Saturday.
Three walks, two errors, and a 2-run walk-off single wiped out solid pitching performances by sophomore Alex Chicote and Marcus Tmur.
Bryce Morison had two hits and a RBI and Trevor Moropoulos and John Jensen had RBI hits for the Dons (13-9)
Nicky Woodall drove in two runs for the Warriors.