Backup goaltender Martin Jones suffered from back spasms so severe he was unable to dress for the Kings’ 3-2 shootout loss to the Ducks on Saturday. J.F. Berube was summoned from the Kings’ American Hockey League team in Manchester, N.H., earlier in the day and he was Jonathan Quick’s backup. Jones’ ailment isn’t expected to sideline him for long, although his availability for Monday’s game against the Calgary Flames was not immediately certain.