Russell Westbrook displayed even more loyalty after signing his huge deal to stay in OKC ... by taking his mom out for a nice meal in Bev Hills.
Sure, a lot of pro athletes would've hit a club or a strip club or fly to Vegas with his boys -- but we got Russell opting for dinner at Mr Chow with his mama, Shannon Horton.
News came out that the Thunder superstar guard had signed a 3-year, $85 million contract while he was inside eating. Russ was rewarded for passing on free agency -- like his old running mate Kevin Durant -- and Mom was rewarded ... for being awesome.
We're pretty sure R Dub picked up the tab.