Complex sentence: In February 1984, Jones replaced Bob Dwyer as coach of the Australian Rugby Union national team (the Wallabies) and he was to coach the Australian team for 4 years with 86 victories in 102 matches including 23 victories in 30 Tests.
Split into simpler sentences: In February 1984, Jones replaced Bob Dwyer as coach of the Australian Rugby Union national team (the Wallabies). Jones coached the Australian team for 4 years with 86 victories from 102 matches including 23 victories in 30 Tests.