Yves Platel succeeded in breaking his own Swiss swimming record in the men's 400 metres medley heats, but his time of 2'05"19 wasn't enough for a place in Wednesday's semi-finals.
Platel's new personal best was particularly remarkable considering the broken knuckle which he suffered in training last week. Never regarded as a serious contender for the individual final, Platel was able to use the race as practice for Friday's 4x100 metres medley relay.
Less convincing was the performance of Switzerland's youngest swimmer at the Games. 17-year-old Agata Czaplicki finished her 200 metres breaststroke heat in the modest time of 2'32"98, some three and a half seconds off the time needed to qualify for the semi-finals.
In sailing, Tom Rüegge and Claude Maurer made a great start to the second day of competition in the 49er class. In the fourth fleet race of the 11-race series, the pair enjoyed a fourth place finish.
But the two men suffered from the rearranged schedule that followed Tuesday's postponements. In the next two races they managed just 15th and 10th place, forcing them down to 10th in the event's overall rankings.
Anja Käser also slipped down the rankings in the women's windsurfing. Her 10th and 13th place finishes in the fourth and fifth races leaves her 12th overall with six races to go.
Lukas Erni and Simon Brügger, meanwhile, made a terrible start to the men's 470 fleet races. Disqualified in the opening race they finished 28th in the second, to leave them last overall.
swissinfo with agencies