They beginned with the 2002 French Open .
They opposed each other in four consecutive Grand Slam singles finals , the first time ever in the open era that the same two players played against each other in four consecutive Grand Slam singles finals , yet alone sisters .
Beginning with the 2002 French Open , they opposed each other in four consecutive Grand Slam singles finals , the first time ever in the open era that the same two players played against each other in four consecutive Grand Slam singles finals , yet alone sisters .