The U.S. drug czar portrayed a menu of changes to anti-doping protocols being proposed by a World Anti-Doping Agency panel in advance of the LA Olympics as moves that would “undermine the trustworthiness of the performances of competitors” at those games in two years.

Sara Carter, the director of the Office of National Drug Control Policy, sent an open letter to WADA and its stakeholders. It comes a day before an “extraordinary meeting” of the WADA executive committee at which it will discuss recommendations from a “working group” put together in the wake of a doping case involving Chinese swimmers.

Bulls set to hire Splitter

CHICAGO — A person familiar with the decision said the Chicago Bulls are finalizing a deal to hire Portland Trail Blazers interim coach Tiago Splitter as their next head coach.

The 41-year-old Splitter joined Chauncey Billups’ staff in Portland last June. He was elevated from assistant to interim coach when Billups was arrested in October in a takedown of a sprawling gambling operation.

Splitter coached Portland to a 42-40 record and a five-game loss to San Antonio in the first round of the playoffs.