With only them vulnerable at matchpoints, the dealer opens one club.
I would make a takeout double in the second seat with the following: ♠ AK97 ♡ K763 ♢6532 ♣ 9. It's only 10 high card points, but I have a nice 4-4-4-1 shape.
My partner in the second seat actually had ♠ AK97 ♡ K76 ♢6532 ♣ 93. Same 10 high card points but the shape is not quite as good. She passed instead of doubling.
Would most experts double or pass with my partner's cards? And would any significant proportion of experts pass instead of doubling with the first (4-4-4-1) version of the hand?