Hong Kong sailor Nicholas Halliday maintained a steady position in the pack after two more races in the men's dinghy event, with six still to come over the next three days.
The 25-year-old is the first SAR Olympian to qualify for the ILCA 7 single-handed event.
He ranked 28th out of 43 sailors.
The 10 participants with the fewest points advance to the medal race. The winner of each race is awarded one point, and the runner-up two, and so on.
After excluding his worst race, Halliday is now on 65 net points, compared with 32 for Juan Ignacio Maegli of Guatemala in 10th place.