's legacy just got the ultimate big up from a huge L.A. street artist ... being immortalized on some Tinseltown bricks right next to fellow Jimmy V award winner Stuart Scott.
The artist's name is Jonas Nevers ... who's done art of other sports figures like Vin Scully, Kobe Bryant, and Magic Johnson ... but made headlines for his Stuart Scott piece last year.
We're told the Sager art -- painted on the brick wall of Melody Bar & Grill -- was finished just moments ago .