It was as predicted by Scotland's European silver medallist Lynsey Sharp after her nomination for the 800 metres, and by Britain's head elite performance coach, Charles van Commenee who said he expected "a heap of appeals".
Despite numerous public intimations, a UKA official declined to comment, other than to observe that they would say nothing unless any appeal were to result in a team change.
Two of Sharp's rivals have confirmed their appeals, while sprinter Richard Kilty (200m) told Five Live he was doing so and Gareth Warburton (800m) tweeted that he, too, had lodged one.
Edinburgh's Sharp, who won the UK trial, maintained a quite dignity, but declined to confirm details. She has the right to respond to any appeal. "But UKA rules don't permit me to make any comment," said the law graduate.
Sharp was chosen despite not having the A qualifying standard, but in a unique move in British Olympic athletics selection history, she was preferred to four women who have.
That single decision took one third of a six-hour selection meeting. Sharp has the B standard, 2min 00.52sec, the personal best she ran in Helsinki to win silver in her fourth 800m race in eight days. The A standard is 1:59.90, and her selection means nobody else can be nominated.
After news of her selection Sharp told The Herald this was "a huge, unprecedented decision".
The four A standard contenders included Jenny Meadows, European Indoor silver medallist last year.
Meadows racked up seven A standards last year, but is without a race since last September because of tendon surgery. She confirmed she would not appeal and graciously added: "I wish Lynsey luck for the Games."
However, three other athletes with the A standard, but no record approaching that of Meadows, may all have appealed. One of them, Jemma Simpson, told BBC Radio Cornwall she had sent a letter, and encouraged all the others to appeal. "I've sent my letter, and I hope everyone else does too," she said yesterday.
Simpson finished seventh as Sharp took silver in Finland, and also finished behind her in the UK trial.
The other athletes in contention are Marylin Okoro, and Emma Jackson. The latter revealed her plan to appeal to her local Staffordshire media outlet, and also confirmed track gossip of an injury: "... a rib fracture the doctors said was just bad luck and it came at the wrong time."
Sharp, however, also beat Jackson into seventh in the trial.
Sharp's three rivals failed to produce their best times when it mattered. Jackson ran her personal best when fifth in a Diamond League race this year; Simpson ran hers when second in a similar race two years ago and Okoro in winning the London grand prix four years ago. Sharp's last two personal bests were set this year and last in European finals, having gone through the rounds, twice winning a medal for Britain.
Any appeal must be resolved by tomorrow, and no further appeal is possible. The appeal panel consists of UKA chairman Ed Warner, UKA president Lynn Davies and an independent barrister.