Gallery: best of Day 9

From an absorbing day of fourth-round action in Paris, here are some of the more enduring images.
Simona Halep, Roland-Garros 2018, 8è de finale© Corinne Dubreuil / FFT
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Simona Halep was all smiles as she breezed through to the quarter-finals. Her opponent, Elise Mertens, was seeded 16th and had enjoyed an impressive clay-court lead in to Paris, yet Halep, the world No.1 demolished the Belgian for the loss of just three games in 59 minutes.