In the
1968–69 snooker season, the World Snooker Championship was restored to being a knockout competition for the first time since 1957. Rea was one of the eight participants in the
1969 World Championship, losing 25–17 to
Gary Owen in the first round. the programme which played a crucial role in popularizing the game. Rea defeated reigning world champion
John Spencer in the final of the four-player
1969 Chester Professional Tournament, achieving a winning margin at 4–2 before Spencer won the . In the
1970 World Snooker Championship, Rea faced defending champion Spencer, who achieved a winning lead at 31–15, which he extended to 37–17 as the dead frames were played out. Rea responded by winning all seven of the frames of the last session, making the final score 24–37. Rea prevailed over Spencer at 4–1 in the final of the
1970 Chester Professional Tournament, before Spencer took the two dead frames. Rea retained the Irish Professional Championship title until he was defeated by
Alex Higgins in January 1972, the championship not having been contested for some years. Rea held Higgins to 5–4 after the first session after losing the first four frames, but Higgins pulled away to win 28–12; the last scheduled session was not required and was played as an exhibition match. Rea entered the World Championship for most of the next 20 years, but his appearances became more sporadic from the late 1970s and he did not progress into the main event. In 1979, Rea took part in the first
World Challenge Cup, joining Higgins and
Dennis Taylor to make up the Northern Ireland team. Rea was only able to win one of the 13 frames he played, and team ended up in third place from six teams. Before going out to play in the
1980 World Championship, Rea declared he would engage his all-out attacking style from the 1950s. Such a tactic overcame [Bennett 9–1 in his first qualifying match, but he lost to
Willie Thorne 1–9 for a place in the main draw. He defeated
Joe Johnson 2–0 on his way to the quarter finals of the
1982 Bass and Golden Leisure Classic, where he lost to eventual champion
Rex Williams. He was placed 48th in the
1983–84 snooker world rankings, which was the highest ranking he attained after rankings were introduced in 1976. By the late 1980s, Rea had the second-longest career of the active professionals, behind only Fred Davis. it was the special award since 1984. In September 1987 Rea defeated
Pascal Burke 5–1 and
Geoff Foulds 5–4 in the first two qualifying rounds of the
Fidelity International Open, but was eliminated 0–5 by John Spencer in the third round. One month later Rea defeated
Mike Watterson 9–6 in the first round of the
UK Championship and held
Bob Chaperon to 7–6 in the following round, before losing 6–9. At the end of the season, his ranking improved from 11th to 99th. After the tournament, Rea was 131st in the
ranking list, which meant that he was relegated to being a "non-tournament" professional, meaning that the only ranking tournament he was eligible to enter was the World Championship. He subsequently retired as a professional. ==Influence and reputation==