It's no secret that we’ve seen a lot more yellow on the field this preseason.

Last Friday, 32 penalties were assessed in New Orleans' 31-24 victory over Tennessee. According to research done by Sports Day columnist Rick Gosselin, the most called in a single game last season was 27.

The NFL has put an emphasis on contact between defensive backs and receivers. Corners and safeties are being called for holding more often. And Jerry Jones thinks he knows why.

"A team like Seattle, who basically played a style that would risk a holding penalty as opposed to not having an aggressive defender back there," said Jones, whose son, Cowboys chief operating officer Stephen Jones is on the competition committee. "That got a lot of complaints, and you're seeing it [called] during the preseason."

Seattle had the NFL's best pass defense in 2013, limiting opponents to 172 yards through the air per game. Seahawks All-Pro corner Richard Sherman led the league with eight interceptions as Seattle finished with an NFL-best 28 takeaways through the air.