The tournament will be shown live on SuperSport
The 25-year-old Nontshinga (11-0; 9) won the title in September last year when he outpointed Hector Flores in Mexico, in a closely fought encounter.
The challenger Suganob (13-0; 4) made his pro debut in November 2018 and captured the vacant IBF Youth flyweight title on 12 October 2021 with a ten-round points win over Jerome Belara (6-0).
In September 2022 he scored a ten-round decision over the capable Andika “Golden Boy” Sabu (19-0-1), and in his most recent fight in September last year he won on an eight-round technical knockout against Mark Viceles (17-0-1) when the fight was stopped after Viceles suffered a cut over his right eyebrow.
Nontshinga is the only South African to hold one of the main organisation titles and has had an outstanding career since making his pro debut on 30 July 2017.
On 21 October 2018 he won the vacant African Boxing Union light flyweight title on a ninth-round technical knockout against Tisetso Modisadife.
He then went on to capture the IBF International light flyweight title with a first-round knockout win over Adam Yahaya on 7 April 2019 and has made successful defences against Siyabongo Siyo (tko 9) and Ivan Soriano (ko 5).
Suganob will be having his first fight outside his home country and with only a 31 per cent knockout ratio he is not recognised as a big puncher.
Nontshinga has a knockout ratio of 82 per cent and could win inside the distance, but the Filipino is known as a skilful fighter and could take the South Africa to a close points decision.
Also on the packed undercard will be IBF Inter-continental junior flyweight champion Nhlanhla Tyirha, SA bantamweight champion Ronald Malindi, South African mini flyweight champion Bangile Nyangeni, and SA super middleweight champion Asemahle Wellem.