Durham bowler Graham Onions is likely to miss the rest of the season after suffering a tear to his abdomen.
The Gateshead-born bowler, capped nine times by England, sustained the injury whilst bowling in the recent Royal London One-Day Cup win over Nottinghamshire Outlaws.
Scan results on Wednesday revealed the full extent of the his left internal oblique injury, which normally takes around six weeks to heal - Durham's final match of the campaign starts on September 23.
Onions has been in fine form and is currently Durham's joint leading wicket-taker in 50-over cricket with 11 victims. The 31-year-old has a total of 27 wickets in all competitions this year, including a triple-wicket maiden over during the recent game with Glamorgan.
Onions said: "I was obviously devastated when I received the results of the scan as the next six weeks of the season are hugely important for the team.
"Although I don't think I can play for the rest of the season, I'll be doing everything I can to try to get fit and help the lads out during those final few games."
Meanwhile, spinner Gareth Breese is set to leave the north east county at the end of the season after 11 years at the club.
Breese said: "It's been a very enjoyable time for me. Over the past eleven years, I've grown as a player, coach and a person and most importantly formed some great friendships on and off the field.
"The highlights have been the successes we've had, not necessarily personal, but just winning trophies as part of a team.
"The one that means the most to me was the 2007 Friends Provident Trophy at Lord's, that's the one that really stands out."
Head coach Jon Lewis added: "Gareth has turned himself into a bit of a legend at the club.
"He's been an outstanding servant, a really good team man and a positive guy to have in the dressing room all the time.
"It's always been a big part of Gareth that he puts others before himself and that's what has made him so popular. He's been an incredibly consistent performer and a match-winner with both bat and ball."