DURHAM will wait to see how Graham Onions and Jamie Harrison react to yesterday's practice before deciding whether they are fit to return to action.

Their priority is to have Onions ready for the championship match at home to Yorkshire, starting on Monday, but Harrison could be in contention for this evening's NatWest T20 Blast tie at Northampton.

The left-armer turned an ankle in the Royal London Cup tie at Derby ten days ago, becoming the eighth seamer to be injured this season if Ben Stokes and Mark Wood are included.

The England pair are expected to return to action shortly in the second team.

James Weighell should be ready for Monday after leading the second team to a five-wicket win against Derbyshire in the three-day match at Darlington, which finished yesterday.

Brydon Carse and Paul Coughlin have had foot injuries and Carse is out indefinitely after playing in all six championship matches to date.

Onions (foot) and Weighell (lower calf) both finished the last championship match at Trent Bridge on the treatment table and coach Jon Lewis admitted that the seam attack which takes the field against Yorkshire will not be 100 per cent fit.

“Weighell has got in some overs in the second team and has come through OK,” he said. “He was really impressive in taking nine wickets in the match at Edgbaston against one of the strongest batting line-ups in the country.

“Barry McCarthy is another possibility, but he will not be back from playing for Ireland against Sri Lanka until Sunday.

“That is not ideal, nor do we want to rush Coughlin into four-day action. We have learnt that if you push players too hard it comes back to bite you.”

Keaton Jennings is confident that Durham will be in high spirits at Northampton tonight after his match-winning exploits against Nottinghamshire on Wednesday.

They were well beaten in the quarter-final at Wantage Road two years ago and Northants went on to win a competition on which they focus heavily.

“We needed a win,” admitted Jennings after his six, four finish off the last two balls on Wednesday.

“I just told myself to watch the ball and hit it. To win it like that is something special, which I won't forget for a while. And it was really nice to get a message afterwards from Gareth Breese, someone I have looked up to as a one-day finisher.”

McCarthy removed both Sri Lanka openers and finished with two for 69 on his Ireland debut in the first of two one-day matches at Malahide yesterday. Durham's Stuart Poynter was also in the Ireland team.