Wayne Gretzky REALLY IS the great one ... he just bought back the famous SoCal mansion he once sold to Lenny Dykstra for MILLIONS less than he sold it for!!!!
Gretzky had sold the palatial 6.5-acre estate in Thousand Oaks, CA to Dykstra for $18.5 million back in 2007 -- back when Lenny was still being hailed as a financial guru.
Dykstra was later exposed as a fraud and his kingdom fell apart -- and the bank eventually foreclosed on the property. Dykstra famously trashed the home he left for good.
The home recently went up for sale ... and Gretzky swooped in and picked it up for $13.5 MILLION, according to the L.A. Times.
In case you're wondering, the place is BALLER AS HELL ... 12,000 square feet of living space, 6 bedrooms, 8 bathrooms, a gym, movie theater, tennis court and TWO guest homes.
Wayne Gretzky ... straight killing it.