The Oklahoma City Thunder and guard Cason Wallace have agreed to a five-year, $139 million contract extension, according to multiple reports on Sunday night. ESPN first reported the deal, with attribution to Wallace's agents at Excel Sports Management.

Wallace, who turns 23 on November 7, made the NBA All-Defensive second team last season, when he led the league in total steals with 150. A guard who leads the entire league in steals while starting on a contender is exactly the stat profile our fantasy basketball page has been flagging as scarce and underpriced since draft season. He averaged career highs of 8.6 points, 2.6 assists and 1.9 steals per game in 26.6 minutes across 77 games, with 58 starts.

The extension is the second half of a bet Oklahoma City made this summer. The Thunder traded Lu Dort, another elite perimeter defender, to the Atlanta Hawks in the offseason, clearing the starting role and the minutes for Wallace. Thunder president Sam Presti said in September that moving Dort was a gesture of belief in Wallace and the role he can grow into.

The money is structured like a cornerstone deal, not a rotation deal. Wallace earns $7.42 million in 2026-27, the final year of his rookie contract, before the extension kicks in. He was the 10th overall pick in the 2023 draft, selected by Dallas and traded to Oklahoma City on draft night.

Oklahoma City opens its season Tuesday night at San Antonio. Wallace walks into that game with the contract signed, the starting job his and a defensive reputation the whole league has to game plan around.

The fantasy angle is the same as the real one: roles this secure, with a stat this rare attached, do not stay cheap for long. Our fantasy basketball page has Wallace's steals case and the rest of the opening week waiver picture waiting, and his price in drafts is about to move the same way his contract just did.

Key Facts

  • Deal: Five years, $139 million, per ESPN via Excel Sports Management
  • Steals: League-leading 150 total steals last season, All-Defensive second team
  • Line: Career highs of 8.6 points, 2.6 assists and 1.9 steals per game in 2026-27 build-up season
  • Money: $7.42 million in 2026-27 before the extension begins
  • Context: Oklahoma City traded Lu Dort to Atlanta this summer, clearing Wallace's role

VIA Reuters, ESPN, Field Level Media.

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