Australia paceman Josh Hazlewood has sent out a warning to Jason Roy ahead of the Ashes, reminding the England batsman about the challenges of transferring his ODI form to Test cricket.
Roy's attacking style of batsmanship was critical in his side's successful World Cup campaign but it is unclear whether he can repeat those heroics in Test cricket.
The England selectors picked him for the first time in Test cricket against Ireland where he scored five in the first innings but struck 72 batting at No 3.
Hazlewood is one of the seamers to watch out for given his ability to put the ball consistently in challenging areas, which will certainly test out Roy’s technique at the top of the order.
The Aussie seamer also believes Aaron Finch's experiences should provide a warning to Roy as the Aussie captain couldn’t quite make an impact in the longest format of the game.
"We'll see how Roy goes in Test cricket. He has only played one Test match and it's a lot different opening the batting in a Test than a one-day game, that's for sure," said Hazlewood.
"In England, opening is probably the toughest place to bat, which probably made Alastair Cook's record all the better. To play attacking cricket in those conditions is tough.
"Aaron Finch found it tough last summer against a quality India attack on wickets that didn't do too much to be honest. I think he found it a big step up.
"He found the ball swung and seamed around and the wickets were a lot different to a one-day wicket.
"He'd played a lot of his four-day cricket at five or six and I think Roy is the same at Surrey. It's hard to bat five at a level below and then open in Test cricket. We'll see."