NBA Official

NBA Referee Assignments

January 18, 2026

Referee assignments are posted at approximately 9:00am ET each game day.

Game Crew Chief Referee Umpire Alternate
Orlando @ Memphis Courtney Kirkland (#61) Scott Twardoski (#52) Marat Kogut (#32)
Brooklyn @ Chicago Zach Zarba (#15) Jason Goldenberg (#35) Michael Smith (#38)
New Orleans @ Houston JB DeRosa (#14) Nate Green (#41) Derrick Collins (#11)
Charlotte @ Denver Josh Tiven (#58) Sean Corbin (#33) Leon Wood (#40)
Portland @ Sacramento Tyler Ford (#39) Eric Dalen (#37) Matt Kallio (#53)
Toronto @ L.A. Lakers James Williams (#60) Ray Acosta (#54) Matt Myers (#43)

Replay Center: John Butler, Simone Jelks, Suyash Mehta

G League Referee Assignments

January 18, 2026

Referee assignments are posted at approximately 9:00am ET each game day.

Game Crew Chief Referee Umpire Alternate
Maine @ College Park Lars Murray (#35) Ryo Hasebe (#8) Eric Lewis (#88)
Cleveland @ Grand Rapids Biniam Maru (#45) Cameron Garber (#33) Maripier Malo (#70)
Delaware @ Noblesville Nate Cearley (#26) CP Painter (#66) Rachael Wood (#44)
Long Island @ Iowa Kenneth Gardner (#75) Quincy Smith (#39) Omar Bermudez (#27)
Salt Lake City @ Sioux Falls Klajdi Mulla (#97) Cameron Gelinas (#54) Ashley Olsen (#25)
San Diego @ Mexico City Jafar Kinsey (#38) Matt Rafferty (#48) Erica Parker (#49)
Memphis @ Rip City Julian Scott (#61) Kaitlynn Versoza (#23) Carlos Peralta Ortega (#18)
Oklahoma City @ Stockton Kastine Evans (#11) Julian McFadden (#52) Hortencia Sanchez-Carrizales (#50)

Crew Chief Position

  • Proficient in Referee and Umpire positions
  • Leader of the crew, on and off the floor
  • High-level play calling, partnering skills, and tools for handling any game situation, including interpersonal communication
  • Understands the importance of extending into their secondary area of coverage, with accuracy

Referee Position

  • Proficient in all Umpire position requirements
  • Effectively the glue for a crew through consistency, teamwork, and communication - makes partners better by carrying a larger portion of the crew’s load than an Umpire
  • Capable of handling some plays in secondary area of coverage
  • Ability to recognize and appropriately manage shifts in game conditions (intensity, emotions, decorum, style of play etc.)

Umpire Position

  • Aggressively and accurately calls plays in the primary area of responsibility
  • Responsible for basic mechanics including rotations, positioning and clock and team foul awareness
  • Strong rules knowledge coupled with contributions to in-game discussions/issues regarding adjudication