A pair of flyweight bouts have been added to the UFC 163 fight card as Iliarde Santos will square off against top contender Ian McCall and hard-hitting John Lineker is set to face Phil Harris. The UFC announced the match-ups on Twitter on Saturday. UFC 163 takes place on August 3rd at the HSBC Arena in Rio de Janeiro, Brazil. The main card, which will air on pay-per-view, is headlined by a featherweight title fight between champion Jose Aldo and challenger Anthony Pettis. Santos, 32, is 27-7 in professional MMA. He most recently competed at UFC on FX 8, where he dropped a unanimous decision loss to Yuri Alcantara. The bout was his UFC debut. McCall, 28, is 11-4-1 in professional MMA and is 1-4-1 in Zuffa-owned organizations. He most recently competed at UFC 156 in February where he lost by unanimous decision to Joseph Benavidez. Lineker, 23, holds a 21-6 record in MMA. He is 2-1 inside the UFC’s Octagon and most-recently competed at UFC on FX 8 where he stopped Azamat Gashimov by second-round TKO. Harris, 30, is 22-10-1 in MMA and 1-1 in the UFC. He last fought in February at UFC on FUEL TV 7 where he defeated Ulysses Gomez by unanimous decision.