At the peak of his career, Gilmour combined "talented hitting" with a "penetrative" left-arm swing bowling and slip catching.

[4] He was awarded two "Blues" by the New South Wales Combined High Schools Sports Association: in 1967 (baseball) and 1969 (cricket).

[12] In 1972–73 season, Gilmour began the next summer well, taking seven wickets against WA (including his first five-for, 5–65) and scoring 72 runs.

[22] A good all round performance for New South Wales against the touring New Zealand team helped his cause, taking seven wickets and making a score of 54.

[24] Before that game he almost took NSW to victory against Victoria, scoring 72 not out in an unsuccessful run chase and nabbing 4 wickets.

[26][27] Gilmour found things slightly tougher in the second test, taking 1–70 and 3–70 and making 3 with the bat in a drawn game.

[28] Gilmour was out-bowled in a Sheffield Shield game by Jeff Thomson[29] and was made twelfth man for the third test so the Australian selectors could trial other bowlers.

In 1974 on the New Zealand tour, Gilmour played against Auckland, resulting in him taking 2 wickets and scoring 52 with the bat.

[37] The 1974–75 competition for fast bowling places in the Australian team was intense at this time, especially once Dennis Lillee returned from injury and Jeff Thomson struck form.

Gilmour wasn't selected for the 1974–75 Ashes series, with the selectors preferring Max Walker as the third pace bowler.

[43] These efforts – 31 Shield wickets at 30[43] – earned him selection on the 1975 tour of England, in part because his all-round ability made him ideal for the World Cup one-day matches.

[44] The Australians, being inexperienced at one-day cricket, often employed a full slips cordon for their opening bowlers.

Gilmour was twelfth man in the early stages of the tournament, but selected for the semi-final against England at Headingley.

[45] With the Australians almost defeated at 39 for 6 in reply, Gilmour thrashed 28 not out off 28 balls to push his team into the final.

[48] Gilmour pressed for selection in the test side with some strong performances in tour games.

[60] Gilmour was picked in the side for the first test against the West Indies[61] and this time it was Max Walker who was made 12th man.

[65] Gilmour was made 12th man for the third test with the selectors deciding to play Max Walker at his MCG home ground.

[77] Gilmour toured South Africa in 1976 with an International Wanderers side managed by Richie Benaud.

[88] He was chosen over Max Walker as third paceman for the first test against Pakistan, in support of Lillee and Thomson.

Later it was revealed that Gilmour had been bowling all summer with a bone "the size of a five-cent piece" floating around his heel.

[104] "I was driving over the Sydney Harbour Bridge one night and the team was read out", recalled Gilmour.

"[106] Gilmour later said, "When we first started playing World Series Cricket, I think we lost a lot of friends ... not player-wise, I don't think ... the players are OK.

There were officials with the cricket association who I regarded as good friends and I had drinks with them whenever I was in Sydney or whenever they were in Newcastle.

He was called into the main side when Dennis Lillee fell injured for the 4th Supertest in 1977–78 against the World XI.

[108][109] He was kept on in the team for the 5th test, suffering badly at the hands of the World XI batsmen, and going for 1–141 in an Australian innings defeat.

[113] Gilmour began the 1978–79 season well with 5–20 in a warm-up game[114] but was suspended for being "a bit overweight" on a tour of New Zealand.

"[106] Following the end of World Series Cricket, Gilmour only played two more first-class games for New South Wales.

[125] Also in that competition took 2–28 in a game against Queensland,[126] 2–39 in the semi-final against WA[127] and 1–53 and scored 21 in the final against Victoria, which NSW lost.

[137] Gary's elder brother, Greg "Sleepy" Gilmour, was the main force behind the Hunter Jaegers joining the national netball league, and played first-grade rugby union for Merewether-Carlton and Wanderers.

Clint Gilmour predeceased his father, dying of brain cancer aged 33 in March 2014.