Paul called Holtkamp's technical on him "terrible" and said if she calls it that way, "this might not be for her."
Hammon, who in August became the first female hired as an NBA assistant coach, said she doesn't believe Paul's comment was a reference to Holtkamp's gender.
On Friday, Lee Seeham, general counsel for the National Basketball Referees Association, addressed Paul's comments.
According to Adrian Wojnarowski of Yahoo Sports, Seeham said Holtkamp's calls were "justified" and that "she belongs."
- Molly Geary