A shoulder injury suffered in training is what led Ng to withdraw from the card.
Sexton, 32, now makes his ONE FC debut on the strength of a three-fight win streak, which includes a recent first-round TKO victory over fellow ONE FC lightweight contender Peter Davis.
Shalorus, 36, looks to continue his recent career revival following a hard-fought unanimous decision win over Eduard Folayang in his ONE FC debut last May.
Known as "The Prince of Persia," Shalorus racked up an unblemished 3-0-1 record inside the WEC, including wins over Dave Jansen and Bart Palaszewski, before stumbling to three straight losses against Jim Miller, Khabib Nurmagomedov and Rafael dos Anjos in his short-lived UFC tenure.
ONE FC 14: War of Nations is scheduled to take place March 14, 2014 at the Stadium Negara in Kuala Lumpur, Malaysia. An updated fight card can be seen below.
Brock Larson vs. Nobutatsu Suzuki
Kevin Belingon vs. Dae Hwan Kim
Yasuhiro Urushitani vs. Adriano Moraes
Kamal Shalorus vs. Ariel Sexton
Andrew Leone vs. Shinichi Kojima
Kotetsu Boku vs. Arnaud Lepont
Peter Davis vs. Wes Jaya