U of L will move to one practice a day and will have a scrimmage on Saturday before players begin classes on Monday.
"Guys are really paying attention to detail," Grantham said after the morning practice. "We've got to keep grinding and find ways to get our best players on the field."
The Cardinals open against Auburn on Sept. 5 and are hoping for much of the same they saw from the defense last season. The Cardinals tied for first nationally in forced turnovers and were a top-10 defense.
"We lost some guys but have some others that have stepped up," Grantham said. "We just have to keep working."