Mavericks' slept-on rookie becomes priceless with stunning stat no one expected

It may have been a lost season for the Dallas Mavericks, but their rookie class delivered a few surprises, and not just Cooper Flagg. Among a group of undrafted two-way standouts, Moussa Cisse quietly separated himself, finishing as the only Maverick to play at least 500 minutes with a positive on-court net rating.

That mark comes with a caveat. Dereck Lively II and Jaden Hardy also finished in the positive, but neither met the same workload threshold. Lively II appeared in just seven games (115 minutes), and Hardy was moved alongside Anthony Davis in February.

Moussa Cisse’s net rating stands out in a lost season

That context makes Cisse’s impact stand out even more. He was the only active Maverick at season’s end to hit that mark, finishing with a +0.5 on-court net rating. The team was better on both ends with the 23-year-old rookie on the floor.

For comparison, Flagg posted a -5.2 on-court net rating versus -4.9 off, meaning the Mavericks were slightly better with the rookie phenom off the floor.

Of course, context matters. Flagg logged more minutes than anyone on a 26-win team, making a negative net rating difficult to avoid. Even so, his mark still held up better than several lineup regulars, including Max Christie, Daniel Gafford, and P. J. Washington.

Back to Cisse. The rookie ranked in the 78th percentile league-wide in efficiency differential at +5.0, meaning Dallas was 5.0 points per 100 possessions better with him on the court than off it.

It’s uncommon for teams, especially struggling ones, to perform better with rookies on the floor, let alone undrafted players. Moreover, Cisse isn’t the type whose numbers jump off the stat sheet, averaging just 4.5 points, 5.7 rebounds, and 1.2 blocks in 13.9 minutes per game.

Cisse impressed for the Mavericks in a finite role

That’s exactly why Cisse was so effective. He operated as a low-usage but high-impact big man, doing the dirty work that doesn’t show up in the box score. Among 582 players to appear this season, he ranked 11th in offensive rebounding percentage and 13th in block percentage. More than half of his field goals were dunks, reinforcing his efficient, low-usage role.

Moving forward, these are the types of players competitive teams need. The Mavericks already feature multiple primary scoring options in Flagg and Kyrie Irving, along with several secondary scoring pieces. But without Lively II on the floor, Gafford was often the only reliable rotation big providing value in a low-usage, rim-running role. Cisse has shown he can fill a similar niche, strengthening his case to remain part of the organization beyond this season.

That need for Cisse doesn’t end there. Dallas' current center duo, Gafford and Dereck Lively II, haven’t always been the most reliable, reinforcing the value of a third option at the position. Ideally, one who has already shown they can contribute in a defined role. And that's exactly Cisse.

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