Dereck Lively II’s 98-Game Sample Makes Dallas’ Patience Defensible

Dereck Lively II’s three-season NBA ledger contains 98 appearances. The league schedule offered him 246 chances to play, meaning the larger number in Dallas’ extension decision is the one that never became a game. That gap does not erase Lively’s production. It does make a long-term price difficult to set with confidence.

The Mavericks let Monday’s 5 p.m. Central deadline expire without extending Lively or Marcus Sasser. Both are entering the final season of their rookie-scale contracts in 2026-27. For Dallas, waiting is defensible because useful production and predictable availability are separate questions.

That is a defensible position for the Mavericks’ front office and an uncomfortable one for a young center whose per-possession appeal is obvious.

The basketball case remains strong

Lively’s career line is remarkably efficient for a player with a modest offensive role. His shooting percentage is 72.5, with per-game averages of 1.6 assists, 7.0 rebounds and 8.4 points. That shooting mark does not mean Dallas should suddenly build its offense around him. It does explain why he can matter without consuming possessions.

A center who finishes the chances created by other players gives a lineup practical flexibility. Lively has paired that efficiency with rebounding, and his passing average points to more than a player standing near the rim waiting for a dunk. His value is concentrated rather than expansive: finish, rebound, connect and make the interior space easier for Dallas’ creators to use.

His rookie year supplied the best extended proof. Lively played 55 games in 2023-24, averaging 8.8 points and 6.9 rebounds, and received second-team All-Rookie honors. That was a substantial enough introduction to establish his NBA usefulness. It was not, however, a complete answer to how reliably that usefulness would be available over several seasons.

Availability has become part of the valuation

Lively appeared in seven games last season, with his last outing coming against New Orleans on Nov. 21, 2025. Dallas announced in December that he needed season-ending surgery on his right foot; James Calder carried out the procedure at London’s Fortius Clinic.

As the deadline arrived, Lively still lacked medical clearance and had sat out each of Dallas’ four preseason games. The team had announced no return date. Those details do not demonstrate a recurrence, and they should not be used to downgrade everything he did before the operation.

They do leave Dallas without a settled answer to the basic roster question: how much of Lively can the team reasonably plan to have?

That distinction matters. A player who shoots 72.5% over his career can be highly valuable when active. A player who has appeared in 98 of 246 possible regular-season games presents a different contract problem. Production per appearance is encouraging; repeatable access to that production is what supports a multiyear commitment.

The missed deadline does preserve options. Dallas may extend Lively a qualifying offer next summer, sending him into restricted free agency. If another club gives him an offer sheet, the Mavericks would have the right to match.

That is meaningful leverage, though it is not a guarantee of a preferred price. Another team’s assessment could raise the cost, and Lively’s market would depend heavily on what he demonstrates after returning.

No specific motive for either decision has been established, so claims about rejected offers or manufactured financial calculations would be guesswork. The case for waiting does not require a verdict on those negotiations. This season can supply a much better basis for pricing Lively’s contribution than another optimistic medical update or a memory of his rookie success.

That is not a retreat from his talent. It is a recognition that the talent has to be present often enough to organize a roster around it.

Sources

Dallas Sports Journal: Lively and Sasser deadline

Mavericks: Powell waiver announcement

Dallas Sports Journal: Cissé contract guarantee