Alex de Minaur has found "gold at the end of the tunnel", defusing the power of Jan-Lennard Struff to make a landmark appearance in the French Open last-16.
Alexander Zverev fell a break behind in the final set against Dutchman Tallon Griekspoor before squeezing through to the last 16 in a tie-break.
Friendship took a back seat at the French Open as Aryna Sabalenka crushed her best pal Paula Badosa at rainy Roland Garros.