sfgate.com photo: San Francisco 49ers’ Jeff Wilson Jr. (41) scores against the Los Angeles Chargers during the first half of an NFL preseason football game in Santa Clara, Calif., Thursday, Aug. 29, 2019.

On the 49ers podcast with Joe:

#1 It’s only preseason but on Thursday Night Football, both teams were clawing and scratching to get a win in a game that the San Diego Chargers had a three-point lead 27-24 on the San Francisco 49ers. How impressed were you with the work the 49ers put out?

#2 The 49ers used Wilton Speight, C.J. Beathard and Nick Mullens at quarterback. Was head coach Kyle Shanahan just trying to get confirmation on whose going to be the backup and evaluate who really looks good in the final preseason game?

#3 Wilton Speight threw for 51 yards going 6-13. Does he have a shot to make the team in some capacity?

#4 CJ Beathard went 6-9 for 58 yards and one touchdown and Nick Mullens went 1-3 for 13 yards. The numbers don’t say much, but it’s most likely these two will wind up being starter Jimmy Garoppolo’s backups.

#5 Talk about running back Jerrick McKinnon’s ACL tear — that will be his third setback during his recovery. The 49ers signed him for $30 million.

Joe Lami does the 49ers podcasts each Friday at http://www.sportsradioservice.com