Nnaji is out for Saturday's game against the Trail Blazers with right adductor tendonosis.
Nnaji had previously missed the Nuggets' last two games with what had been classified as lower-back pain, but the team's latest injury report suggests he's dealing with an injury to his thigh/groin area. In any case, his absence should leave the Nuggets with DeAndre Jordan and Peyton Watson as their primary options at center, as two-time MVP Nikola Jokic (back/hip) is also sidelined Saturday.