[1] Dyson participated in two "rebel tours" of South Africa in 1985–86 and 1986–87 in defiance of the international sporting boycott of the apartheid state, scoring over 1,000 runs.

He played soccer as a goalkeeper in the Sutherland Shire (Cronulla RSL) and was a member of the side that won the Dallimore Competition and runners-up in the NSW Amateur Cup final.

His decision to do so was based on a faulty D/L calculation because of a fall of wicket on the second ball of the 47th over, thereby causing his team to lose a match it had a good chance of winning.

[3] He was sacked as the coach of the West Indies on 13 August 2009 shortly before the team was due to play in the ICC Champions Trophy in South Africa.

Dyson attracted attention with a man of the match innings against Queensland in a Gillette Cup semi final.

[14] Dyson made 53 runs in the first innings, taking part in a crucial partnership of 84 with Bob Simpson.

Dyson was rewarded in selection for the Australian squad to tour England in 1980, picked over Rick McCosker and Julien Weiner.

[31] Dyson had an excellent 1980–81 summer domestically including a record first wicket partnership with Rick McCosker against WA.

Ian Chappell wrote "Dysion has been criticise,d abused, omitted, overlooked and plain forgotten but each time he shrugs it off and returns to the fray a more accomplished and determined player."

Chappell called Dyson "very consistent, he's hard to get out, he has a ton of grif and he's determined to keep on improving his game.

"[41] Despite his relative lack of success at test level, Dyson's excellent first class form saw him picked in the Australian squad to tour England in 1981.

Dyson missed the three tests against Pakistan with the selectors choosing Graeme Wood and Bruce Laird as openers.

Dyson made 43 & 59 for New South Wales against an England XI at the SCG[62] and 44 in a 50 over match against New Zealand.

[66] Dyson was overlooked the following summer for international selection during the series against Pakistan in favour of Wayne Phillips in test matches and Steve Smith in ODIS.

Despite this outstanding season, he didn't earn a place on the Australian tours of the West Indies and India, with his fellow New South Welshman Steve Smith preferred as an alternative opener to Wessels and Phillips.

When Wessels had to return early from the West Indies tour due to injury, Graeem Wood was sent out to replace him rather than Dyson.

[72] After the third test Bob Simpson wrote he considered Dyson "the best equipped opener in Australia" but felt he "is not playing to his full potential and would benefit from a spell against the lightning pace of the West Indies.

Phil Wilkins called Dyson "the most valuable man in the" New South Wales team that summer.

[77] During their successful Sheffield Shield campaign of 1984/85 for NSW teammate Imran Khan said that he hoped Dyson would be selected for the Ashes tour to England in the summer of 1985.

"[76] Dyson expressed a desire to regain a place in the test side when his ban was over but he struggled on his return to NSW in January 1988 making 157 runs at 19.62 from 5 games during the 1987/88 season with a highest score of 60 not out.

[81] Dyson's good form led to speculation he could earn a place on the tour to England for the 1989 Ashes series however he was not selected.

Dyson captained NSW for two FAI cup games at the start of the 1989–90 season[82] but suffered a knee injury and was replaced in the side by Steve Small for the first Sheffield Shield match against South Australia in Adelaide.

[83][84] The selectors then preferred promising prospect Geoff Milliken and Dyson never regained his state place.

Dyson continued to play first grade cricket for Sutherland and was captain of the side which included a young Glenn McGrath.

In 1991, NSW captain Geoff Lawson attempted to persuade the selectors to recall Dyson but they decided against it.

In 2003 Dyson took over from Dav Whatmore as Sri Lanka's coach, a post he held for two years.

Dyson immediately guided the Caribbean side to their first ever away test match victory against South Africa.