Mark Davis was one of about 100 people who attended the funeral services for Tina Tintor on Thursday ... paying respects to the woman who died in a car crash that authorities say his former player, Henry Ruggs, caused.
The Las Vegas Raiders owner showed up to the somber ceremony in a black suit, white-collared shirt and a tie ... and sat in a pew at the local church where the services for Tintor went down.
Davis stayed for the entire hour-long event ... and did not speak with media members afterward.
As we previously reported, Tintor died along with her dog, Max, after cops say Ruggs crashed his Corvette into the back of their Toyota on a street in Las Vegas on Nov. 2.
Officials say Ruggs had been speeding prior to the wreck -- going 156 MPH just seconds before the crash -- and claim the former Raiders star was drunk at the time, too.
Ruggs has since been hit with five charges over the incident -- including four felonies -- and prosecutors say he's facing over 50 years behind bars if convicted on all counts.
As for Tintor and her family, her attorney said in a statement following the crash that they're "devastated" over the loss of the 23-year-old.
"Family was everything to Tina," the lawyer said, "and she was the light of her parents' life."
RIP