Instant analysis of 49ers’ 24-23 collapse against Cardinals in record heat

SANTA CLARA — Another fourth-quarter collapse led to another 49ers loss against an NFC West rival on Sunday.

Two weeks after faltering on the road to the Los Angeles Rams, the 49ers blew another 10-point lead and exited with a 24-23 loss to the Arizona Cardinals, who went ahead on Chad Ryland’s 35-yard field goal with less than two minutes to play.

The 49ers (2-3) could not respond in kind, not with kicker Jake Moody injured, and not when Brock Purdy had his final pass deflected...