[Fischer] Hammon impressed Portland officials and was generally liked among Blazers staffers, sources said. But when Portland reached out for intel from San Antonio, the background on Hammon was not nearly as complimentary pertaining to various aspects of day-to-day coaching responsibilities.

Source: https://bleacherreport.com/articles/2945304-inside-the-highly-scrutinized-nba-head-coaching-hires-in-portland-dallas

Billups had been considered the leading Portland candidate for months, but it does appear that both Brooklyn assistant Mike D'Antoni and San Antonio assistant Becky Hammon were legitimate finalists to fill Portland's vacancy. D'Antoni was billed as the choice somewhere in the middle, a noted offensive guru that could boost Lillard's production and vault him into a legitimate MVP conversation.

Hammon impressed Portland officials and was generally liked among Blazers staffers, sources said. But when Portland reached out for intel from San Antonio figures, the background on Hammon was not nearly as complimentary pertaining to various aspects of day-to-day coaching responsibilities. That sentiment has been echoed by sources around the league. Blazers personnel then cast doubt that Hammon was the candidate to steer the ship through such delicate waters with Lillard.

Blazers chair Jody Allen was the strongest champion for Hammon, sources said. Allen was energized by the idea of hiring the first female head coach in NBA history, also evidenced by the team contacting South Carolina women's basketball head coach Dawn Staley.