Wilder and Joshua fights live on BBC Radio 5 Live

Anthony Joshua has two wins from two fights this year

Anthony Joshua and Deontay Wilder's heavyweight fights on Saturday will be broadcast on BBC Radio 5 Live.

Wilder, 38, and Joshua hope to face each other in their next fight, but must come through their respective bouts to do so.

You can follow radio coverage from 21:00 GMT, with Joshua's ringwalk not expected before 23:15.

Joshua, a two-time world champion with 23 wins and three losses in his professional career, takes on Sweden's Wallin.

The pair fought in the amateurs with Joshua winning both encounters, but 33-yera-old Wallin (26-1) has insisted Joshua "peaked" in 2018 when the Watford fighter held the WBA (Super), IBF and WBO heavyweight titles.

Joshua fights in his third bout of the year after promising to rebuild himself following successive defeats by Oleksandr Usyk.

Former WBC champion Wilder (43-2-1) has arguably the tougher fight on paper against New Zealander Parker, 31.

Parker (33-3) is a former world champion and is on a three-fight win streak.

Also on the undercard in Saudi Arabia is Briton Daniel Dubois' heavyweight clash with Jarrell Miller and Lyndon Arthur's world-title challenge against WBA (Super) champion Dmitry Bivol.

As well as radio coverage, you can follow live text commentary from the main fights and undercard on the BBC Sport website and app.