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Thunder Lock Up Cason Wallace With Five-Year, $139 Million Extension

The deal keeps Oklahoma City’s perimeter defender in place to protect its championship window while adding a long-term payroll commitment that will tighten the team’s salary-cap flexibility.

Overview

  • The Thunder and guard Cason Wallace agreed to the five-year, $139 million rookie-scale extension before the Oct. 19 deadline on Monday, avoiding restricted free agency next summer.
  • The contract averages about $27.8 million a year, officially begins with the 2027-28 season and keeps Wallace under club control through the 2031-32 season.
  • Oklahoma City’s decision was driven by Wallace’s defense: he led the NBA with 150 steals in 2025-26, earned All-Defensive Second Team honors and finished seventh in Defensive Player of the Year voting.
  • The extension gives Wallace a secure starting role after the team traded Lu Dort this offseason, but it raises the Thunder’s projected luxury-tax and second-apron costs and will limit their ability to add players in future free-agent or trade markets.
  • By signing Wallace the franchise has its core starters signed long term, a move that protects the team from rival offers that sources said could have exceeded $30 million per year and that forces the Thunder to manage depth and payroll over the coming summers.