HALF-CENTURIES from Ali Orr and Aaron Thomason were not enough to stop Sussex slumping to their fifth defeat in their last six matches against Yorkshire at Headingley.

The visitors collapsed from 180-5 to 215 all out as they lost by an innings and 30 runs.

Sussex began the day 38-0 with Orr 23 not out and Tom Haines unbeaten on 12.

But after the pair had brought up their 50 partnership just five overs into the day’s play, they suffered an early blow.

Haines was outdone by a delivery from England spinner Dom Bess, which had a bit of extra bounce and the ball looped up off his bat as he tried to defend the delivery and Adam Lyth took a great diving catch to his right to leave Sussex 60-1.

Stiaan Van Zyl came to the crease, but he did not hang around for long as he went for a golden duck after being caught behind off the bowling of Jordan Thompson, meaning Sussex lost two wickets in the space of four balls.

Thomason made his way out to the middle to join debutant Orr.

The 20-year-old opener brought up his maiden first-class 50 off a 139 balls, which included eight fours.

Not long into the afternoon session Thomason and Orr brought up their 50 partnership off 176 balls.

But then Orr’s innings came to an end as he misjudged a delivery from Bess and he was bowled for 67.

Travis Head came to the crease to join Thomason in need of a big score.

However, after making a promising start he then threw his wicket away, as he tried to drive Ben Coad through the covers, but the ball flew off his outside edge and was well caught by Tom Kohler-Cadmore at first slip, meaning he went for 18.

Thomason brought up his third half-century of the season off 175 balls, with his eighth four.

However a couple of overs later, he was smashing down his bat in frustration, after he edged a delivery from Bess to Lyth at first slip.

That sparked a collapse for Sussex who went from 180-5 to 187-9 in just 19 balls.

Debutant Daniel Ibrahim, who scored a half-century in the first innings, lasted three balls as like Thomason he edged a delivery from Bess to Lyth at first slip.

Jack Carson did not hang around either after he flicked David Wiley’s delivery to Thompson at leg gully.

Stuart Meaker went for a duck as he was caught at short leg by Harry Brook off the bowling of Wiley.

Henry Crocombe also went for a duck as he was caught behind off the bowling of Wiley.

Skipper Ben Brown was the last to go as he was bowled by Steven Patterson when it initially seemed he had been caught behind.