October 12, 2020 | 4:19pm

The Giants lost one of their most important defensive players for the remainder of the season, as further testing and an examination on Monday confirmed what was suspected a day earlier: Lorenzo Carter has a ruptured Achilles tendon.

Carter, 24, was on the field for only 10 snaps in the 37-34 loss to the Cowboys when he went down with 11:23 remaining in the first quarter. The non-contact injury cost the Giants their top outside linebacker, one of the building blocks of a defense that has shown flashes of competence and, at times, excellence.

This is a blow to that defense. Carter will land on injured reserve and have surgery in the next few days to repair the damage. Given the nature of this injury, it is likely Carter will miss the start of the 2021 season, as this rehabilitation often takes at least a year.

The Giants are without outside linebacker Oshane Ximines for at least two more games, as he is on injured reserve with a shoulder issue. Markus Golden and Kyler Fackrell are the two healthy outside linebackers and rookie Cam Brown is also on the roster. Another rookie, Carter Coughlin, was drafted as an outside linebacker but has been working at inside linebacker in practice.