Rashee Rice took a second to update Chiefs fans on his injury on Thursday ... showing his knee in a brace after undergoing surgery earlier this week.
The 24-year-old Kansas City star receiver uploaded the image to his Instagram page ... featuring his leg propped up on a car seat and the caption, "rise & shine."
Rice -- who went under the knife to repair his LCL -- will miss at least four games after being placed on Injured Reserve .