Brock Purdys First Preseason Look Brought One 49ers Concern Into Focus

In a strong preseason performance, 49ers' quarterback Brock Purdy demonstrates accuracy and decision-making prowess, illustrating growth after focusing on reducing interception rates during training camp.

Brock Purdy’s summer has been built on a simple pattern: keep the ball out of trouble, stay efficient, and make the occasional practice mistake feel like a useful rep instead of a disaster. That approach showed up again this week, and it carried into Thursday night, when the 49ers quarterback handled his preseason debut against the Chargers without throwing an interception.

Purdy took only one series in the 49ers’ 12-snap cameo, finishing 4 of 6 for 29 yards and adding a 3-yard scramble as San Francisco reached the Chargers’ 45-yard line. His first preseason pass went to Deebo Samuel, who later got a turn as a punt returner, and Purdy also completed all three of his throws to rookie De’Zhaun Stribling.

The clean outing came after a camp in which interceptions have been hard to find. Purdy has thrown only three others across nearly 200 passes this summer. That’s a far cry from the one he kept circling back to Tuesday at the Chargers’ facility, when he detailed a red-zone throw to Luke Farrell that linebacker Del-Shawn Phillips picked off near the goal line.

“Obviously, you don’t want to turn the ball over, but I just try to be efficient, get into a habit of if it’s not there, check the ball down, throw the ball away,” Purdy said Tuesday. “I feel like I’ve done that at camp.”

Afterward, he didn’t dismiss the play entirely.

“Down there in the red zone, I don’t know if I’m going to throw that ball in the game, but I wanted to try putting a tight ball on to Luke,” Purdy said, “and there was good coverage on the backside by the safety and he just poked his hand out and popped the ball up.

“That’s practice, but I think it’s also good work to see if I can get that done or not. That’s sort of just been my mindset.”

The interception count still matters because Purdy’s 2024 numbers are the ones that spiked. His interception rate jumped to 3.5% last season, up from 2.4% in 2022, 2.5% in ’23, and 2.6% in 2024.

Two of his picks this camp came Aug. 8, when Upton Stout and Deommodore Lenoir turned them into pick-sixes. That brought back reminders of last year, when Purdy was intercepted in each of the 49ers’ final five games and then had another third-quarter pass toward Farrell picked off in the 41-6 divisional-round loss in Seattle.

Even with that backdrop, the overall resume still stands out: Purdy’s 104.0 career passer rating would rank first in NFL history if he had enough qualifying passes, and he is 147 attempts shy.

Thursday’s appearance also fit the 49ers’ preseason plan. Purdy and most starters sat out last week’s opener against Tennessee, and he hadn’t played in the first exhibition since his rookie year in 2022. Last season, his only preseason action came in Las Vegas, where he led a 12-play opening drive in the second exhibition game.

There were other developments around the 49ers’ preseason work as well. Cornerback Renardo Green left with a hamstring injury after the second series, which ended with him defending a 50-yard Trey Lance incompletion. Jack Jones stepped in, and San Francisco forced a third punt in as many series.

Stribling kept flashing. After going 7 of 8 in his debut a week earlier, he opened this one by catching all three of Purdy’s targets. He later grabbed a 21-yard pass from Mac Jones, though he also dropped what could have been a 33-yard touchdown on an over-the-shoulder chance at the 5-yard line.

“Well he’s human after all,” Hall of Fame quarterback Dan Fouts said on the Chargers’ broadcast.

Elsewhere, George Kittle got a reassuring update on his Achilles recovery. The tight end said last weekend that he was well ahead of schedule and could be ready for Week 1, and ESPN’s Adam Schefter reported Wednesday that Kittle’s Los Angeles-based surgeon, Dr. Neal ElAttrache, confirmed that progress.

Trey Lance also had his moment against his former team. The former 49ers first-round pick, traded to Dallas before the 2023 season, showed the same scramble threat that once made him such an intriguing prospect.

He broke loose for a 37-yard run to the 49ers’ 5-yard line, slipping past Ogbo Okoronkwo and Jaden Dugger before Jalen Stroman made a touchdown-saving tackle. The Chargers settled for a tying field goal after stops from Sam Okuayinonu, Garrett Wallow, and then Jones, who broke up a fade in the end zone.

The 49ers’ backfield issues kept piling up, too. Patrick Taylor Jr. became the first San Francisco running back to land on Injured Reserve for a yet-to-be announced issue after joining a string of injuries at the position. He caught a Purdy pass on the 10th snap of Tuesday’s team drills and then didn’t touch the ball again.

That depth problem was serious enough to push the 49ers to bring back Khalil Herbert before the game, just three days after cutting him.

Sincere McCormick scored San Francisco’s first touchdown Thursday, capping a 37-yard run with a 7-yard score. The injury trail in the backfield has been building since April, when Isaac Guerendo tore a pectoral muscle and landed on the Physically Unable to Perform list, where he remains but appears close to returning.

Christian McCaffrey has been out since Aug. 10 with unspecified tightness, though Kyle Shanahan said Tuesday that McCaffrey would have been able to play if this had been a regular-season week. Jordan James, the projected backup, has been out since breaking a rib July 27.

Rookie Kaelon Black missed 2 ½ weeks before returning Tuesday and Thursday night, and he had 33 yards on his first eight carries.

Thursday’s starting offense also left out several players expected to be part of the opener in Australia: left tackle Trent Williams, wide receiver Mike Evans, running back Christian McCaffrey, right guard Dom Puni, and presumably Kittle and left guard Rob Jones. Among the players making preseason debuts were Osa Odighizuwa, Deebo Samuel, Deommodore Lenoir and Renardo Green.

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