Playing together, Gibson made a double bogey at the first and dropped another at the second while Drewitt made a run of five straight bogeys to open his account.
Both players started the week well, Gibson even sharing the lead after 18 holes, but the final three rounds proved a struggle at the Bogota Country Club in Colombia.
To their credit both recovered reasonably given the rough start but despite four birdies each by day’s end finished over par and well behind tournament winner Ben Taylor of England.
Drewitt’s 2-over final round saw him even par for the tournament and T54 while Gibson fared one shot better overall to be T47.
They were the only two Australians to make the cut in the fourth event of the secondary Tour season but despite the hiccup both are in good position on the all-important money list.
Gibson’s fast start to 2018, including third-place finishes at each of the first two events, has him seventh on the standings while Drewitt has dropped to 15th after this week.
The top 25 at the end of the year are guaranteed access to the main Tour next year and both will have their sights firmly set on achieving that goal.
Gibson and Drewitt weren’t the only Australians to find the going tough in South America with Western Australia’s Curtis Luck missing his first cut since joining the Tour this year.
Mathew Goggin and Jamie Arnold also failed to qualify for the weekend but all will have a chance to work on their games in coming weeks as the Tour takes a month long break before picking up again in Mexico.
NICK FALDO ON DEALING WITH FIRST TEE NERVES:
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