When Marcus Bowyer went to bed last night he thought he would be racing in today's B final of the men's four at the World U23 Championships in Linz, Austria.
By the end of this morning's semi-final session he was into an A Final of a completely different boat, the men's quadruple scull, having been substituted for a poorly Stewart Innes.
A graduate of the GB Rowing Team Start programme, Bowyer joined Jack Beaumont, Barnaby Stentiford, and Angus Groom on the start line. Remarkably, they were leading their semi-final with 500m to go before relinquishing the lead to New Zealand.
In the final 500m they were challenged strongly by France but held on to second by just under two tenths of a second to reach tomorrow's final.
Brianna Stubbs and Eleanor Piggott, close rivals at the GB Rowing Team Senior Trials earlier this year, have teamed up to great effect in the lightweight women's double since then.
Today they led their semi-final at the World U23s in Linz, Austria, with panache, opening up a gap of three seconds on the chasing pack by halfway and holding off a fast-finishing Australian duo to win in 7:18.20. Switzerland took the third qualifying slot.
Zak Lee-Green is through to the final of the lightweight men's single scull. He took third place in today's semi-final to qualify in a time of 7:14.26. After a winter of training disrupted by illness, reaching the final is a big measure of success.
Today he moved up through the field steadily to overhaul Australia at 1500m and book his finals place in a race won by the USA with Ireland second.
I am very pleased with the way our rowers have stepped up to get eight A final qualifications. The World U23s is a very, very high standard event and it's a great grounding for our young rowers to be challenged and that's why I'm pleased, said Sir David Tanner, GB Rowing Team Performance Director.
Of the eight finalists, two - the lightweight men's pair and the light women's quad - race later today. The other six will be on tomorrow's start list with all the A finals in the morning session.
Stuart Sykes and Jamie Copus, whose brother Rory is cox to the GB men's eight in Linz, will race a B final of the lightweight men's double scull after their fifth-placed finish in today's semi-final. A scratch combination who were brought together late in the day because of injury in the squad, they have done well to finish in the top twelve.
Later in the morning session today the GB men's coxed four won their B Final whilst the men's four was withdrawn from its B final to allow Bowyer to transfer to the men's quad.