Halftime update: San Francisco 49ers 13, New Orleans Saints 7 ...

The Saints' front four and the rest of the defense dominated 49ers quarterback Blake Purdy as he went two for six for 11 yards and was sacked once by defensive end Carl Granderson. Newcomer Chase Young was in the 49ers' backfield throughout the first quarter.

Rookie Spencer Rattler replaced Carr in the second quarter and gave up a fumble on a sack.

The following Saints players didn't dress for the game: Paulson Adebo, Ugo Amadi, Demario Davis, Taliese Fuaga, Jaylan Ford, Dallin Holker, Michael Jacobson, Trajan Jeffcoat, Alvin Kamara, Marshon Lattimore, Kendre Miller, Monty Rice, Nick Saldiveri, Rashid Shaheed, Isaiah Stalbird, Mason Tipton and Pete Werner.

Rookie cornerback Kool-Aid McKinstry started but left during the first series with a right leg injury.