The New York Giants ’ biggest need ahead of the trade deadline remains their defensive line.

Despite pouring so many resources into the unit since the offseason, including the recent signing of veteran Dean Lowry to the practice squad, the depth behind starters Shelby Harris and D.J. Reader remains suspect, particularly against the run.

When either or both of Harris and Reader are on the field, opposing offenses have averaged 4.4 yards per carry. When one or both are off the field, that average has jumped to 5.2 yards per carry.

Their absences have also been felt on third down. When either or both of Harris and Reader have been on the field, opponents have converted 64.3% of their third-down attempts.…