Yes, Nick Mullens imploded. But others aren't off the hook.
Instant replay: Arizona Cardinals top San Francisco 49ers for
San Francisco 49ers - Wikipedia
Regular Season Game 2 - Chiefs at Steelers (9-16-18) by Kansas
C.J. Beathard Pens Emotional Tribute to Slain Brother, 22
One son killed, another in the Super Bowl - How the Beathard
49ers 5 keys to beating winless Arizona Cardinals
One year after his brother's death, C.J. Beathard puts on
Niners get emotional win for C.J. Beathard after family tragedy - ESPN
49ers' CJ Beathard on brother's murder: 'I can find some peace