Danish fourth seed Holger Rune crashed out of the US Open on Monday, losing in four sets to Spanish journeyman Roberto Carballes Baena. Rune, beaten in the quarter-finals of Wimbledon by Carlos Alcaraz, succumbed 6-3, 4-6, 6-3, 6-2 in 2hr 42min. 

Carballes Baena, a clay-court specialist ranked 63rd in the world who has never been further than the third round at a Grand Slam tournament, will face either Russia’s Aslan Karatsev or the Czech Republic’s Jiri Lehecka in the second round.