World champions Katherine Grainger and Anna Watkins set up an exciting women's single scull final at the GB Rowing Team Senior Trials after both claimed semi-final victories at Eton Dorney.
The pair will race together in the double scull at the London Olympics, the event in which they won the world title in Slovenia last year.
But they will be fierce rivals on Sunday when Grainger will aim to gain revenge for her defeat to Watkins in last year's trials, which brought her six-year reign as national champion to an end.
"I'm pleased with today. I've got two good races under my belt", Grainger said. "Of course, Anna and I are competitive but we also want each other to do well because that will make the boat go quicker when we come together in a boat."
Greg Searle, the 1992 Olympic gold medalist who came back to the sport last year after a 10-year lay-off, booked his place in the final when he and Tom Ransley took second in the men's pair repechage behind Moe Sbihi and James Foad.
Graeme Thomas won his men's single scull repechage ahead of Tom Solesbury with Charles Cousins winning the other repechage.
World lightweight men's pair champion Peter Chambers won his lightweight men's single scull semi-final with Adam Freeman-Pask taking the honours in semi-final two.
Imogen Walsh, Andrea Dennis, Laura Greenhalgh and Kathryn Twyman all booked a place in the equivalent women's final.
David Tanner, GB Rowing Team performance director, said: "We've had some great racing today and it's excellent to see the Olympic course in such an exceptional state - good conditions and fast racing.
"There have been some very tough calls to get boats into the A Finals but we know that tomorrow's finals will almost certainly be the most competitive that we have ever had a GB Rowing Team Senior Trials."
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