Oxfordshire and Banbury captain Ian Hawtin will be out for at least six weeks after fracturing his right elbow.
Wicket-keeper Hawtin, 45, picked up the injury while working in the loft at his new house in Kirtlington.
Hawtin said: “I fell down getting out of the hatch and my arm got trapped and hyper-extended at the elbow.
“We have just moved into a new house and I was putting stuff in the loft. It was one of those things.”
Hawtin was treated at Banbury’s Horton Hospital, not far from where his teammates were beating High Wycombe in the Kingfisher Beer Cup.
He said: “I went back on Tuesday to see the specialist and get my elbow in a full cast.
“It will be in there for two weeks. You can’t immobilise it for longer than that because it can seize up.
“I will have an operation on June 11. The pain is not too bad if I take my tablets.”
Banbury vice-captain Jimmy Phillips will replace Hawtin as skipper, with Jonny Cater donning the gloves.
Hawtin’s stand-in for Oxfordshire will be decided when selection takes place for their opening Minor Counties Championship fixture against Berkshire at Henley, starting on Sunday.
“It is pretty disappointing, but we’ll see what happens in two weeks’ time,” said Hawtin.
“They say it takes about six weeks to heal.
“I will go and support the lads, but it will be hard not playing.
“This is the most serious injury I have had. I have been pretty lucky really.”
The news of Hawtin’s injury came after Banbury reached the Group 12 final of the Kingsfisher Beer Cup with a 72-run victory over Wycombe at White Post Road.
Banbury will visit Birmingham League Champions Barnt Green on Sunday, June 17.
Having blown a great chance of victory to lose by one run to Wycombe in the previous day’s Home Counties Premier League encounter, Banbury made no mistake in the national knockout competition.
The hosts made 237-5 in their 45 overs after winning the toss.
Ian Tew (49) and Lloyd Sabin Sabin (28 from 21 balls) got Banbury off to a flier against the new ball, but the real test was to come against spin.
Craig Haupt (46) marshalled the middle of Banbury's innings well, setting up a platform for Richard West (38) and Cater (49no) to pick up the tempo late on.
After John Stevens was run out by keeper Cater, the game hinged on former Surrey and Leicestershire batsman Jamie Benning.
He hit 45 off just 27 balls before being stumped by Cater off Phillips’s second delivery.
West (3-25) and Nathan Hawkes (2-31) ensured Wycombe were all out for 165.