Carlos Alcaraz has called himself for breaking the rules at the French Open and conceded a point during his four-set victory over Ben Shelton.

Follow live text and radio coverage of the French Open as Carlos Alcaraz plays Ben Shelton on day eight at Roland Garros.

Frances Tiafoe joined his fellow American in the last-eight with a straight-sets victory over Daniel Altmaier. The 15th seed had never previously made it beyond the third round at Roland Garros, but he will face Lorenzo Musetti or Holger Rune for a place in the semi-finals.