Geoff Dymock was a medium-fast opening left-arm bowler, off a short run of 12 paces. Dymock was Quennsland's main attack weapon for many years and was the State's highest ever wicket taker with 425 wickets. Although a main bowler for his state side, he was used as a stock bowler for his country. He was a dangerous bowler who could swing the ball both ways and in 21 Test matches took 78 wickets costing 27.13 per wicket.

Dymock then started a battle for his Test side with fellow Australian Gary Gilmour (a player with similar bowling to Dymock but his batting was superior). After a spell out of the Test side. Dymock fought his way back in after taking 35 wickets in 9 State matches, this time at the expense of Gilmour and booked his place on the 1977 tour of england. Unfortunately he only took 15 wickets in 10 first class matches and ended the series with dissapointing figures. He bowled well through the 'Packer' period witht many first choice bowlers unavailable, taking 6 for 34 in one match. He made one final visit to England as a player for the centenary Test match but was unsuccessful. His Test career over, he retired from first class cricket in 1982 and was assistant manager to the national side on tour to England in 1985.