Tom Smart,
Phoenix Suns head coach, and former Jazz player and assistant coach, Jeff Hornacek as the Utah Jazz and the Phoenix Suns play NBA basketball Monday, Dec. 21, 2015, in Salt Lake City.

PHOENIX — A person with knowledge of the situation says the Phoenix Suns have fired assistant coaches Jerry Sichting and Mike Longabardi.

The person spoke on condition of anonymity because the firings had not been announced.

Also, assistants Earl Watson and Nate Bjorgken have been promoted to bench coaches. Watson played guard for the Utah Jazz from 2010-2013.

The shake-up on head coach Jeff Hornacek's staff comes after an embarrassing home loss to Philadelphia on Saturday night. The Suns are 12-20 and have lost four in a row.

The firings first were reported by Yahoo Sports.