ALAMEDA, Calif. -- The scar on the outside of Oakland Raiders quarterback Derek Carr's right ankle tells the story of the most brutal sack he took last season, the season-ending broken fibula he endured in Week 16.

His eyes, and memory, though, recall a different type of beating.

"Yeah, from past family experience, I know that if an injury happens or anything like that or if someone breaks a shoelace, that we're OK still," Carr said of feeling protected behind his offensive line in Oakland, while referencing the motley crew his brother David played behind in Houston 15 years ago.

"Let alone with our starting five, it's a good thing."

David Carr, as the No. 1 overall pick of the expansion Houston Texans in 2002, was sacked an NFL-record 76 times that season.

The elder Carr played behind one of the worst offensive lines assembled in modern league history.

The younger Carr was playing without his security blanket, Pro Bowl left tackle Donald Penn, in Saturday night's exhibition for the first time in Carr's four-year career as Penn's holdout continued and has no sign of ending.

It reached 26 days on Tuesday.

"I'll just coach the guys that are here," said Raiders coach Jack Del Rio. "I'm not going to really go further on the subject."

Which makes Carr not being touched, let alone sacked in his 2017 preseason debut against the Los Angeles Rams, all the more impressive, what with journeyman offensive lineman Marshall Newhouse protecting Carr's blindside.

As they say, the less you notice an offensive lineman, the better the job he is doing. Or somesuch.

"He did a good job, he did a really good job," Carr said of Newhouse. "At one point, they switched and put [David] Sharpe in as well and I didn't know until like two plays into the series. I was like, 'Oh snap, the rook is in. OK.'"

Carr laughed.

This, though, is no laughing matter at Carr family get-togethers.

Carr has been sacked 71 total times in 47 career games. His brother, who took those record 76 sacks as a rookie, was sacked 267 times in 94 career games. In his first three 16-game seasons, he was sacked 193 times combined.

"But like you said, that means [the Raiders offensive line is] doing some good things, which means when Donald gets back, we have a lot of good offensive linemen and that's something that as long as Mr. [general manager Reggie] McKenzie is involved here, is going to continue to happen," Carr said.

"We're always going to have good offensive linemen."

And better stories to one-up his brother on at family functions.