The Kings placed center Jarret Stoll on injured reserve because of a groin injury.
Simmonds has 20 points in 33 games, but hasn't played since Dec. 10. He had arthroscopic surgery on his left knee earlier this month, but missed just four games thanks to an eight-day break in Los Angeles' schedule.
Stoll was hurt in a loss to Vancouver on Dec. 14, keeping him out of the last two games. He has 10 goals and 15 assists this season.
The seldom-used Segal has missed nine games because of a sprained knee.