11th wicket partnership?
80 by Whitfield & Morton: Cambridge Uni v Surrey at The Oval 1878
12th wicket partnership?
13th wicket partnership?
14th wicket partnership?
By the way, I do not agree that any of the above should be recognised.
However, 11th & 12th (by Cricinfo, Wisden, Frindall), and 13th & 14th
(by Wisden & Frindall only) do apparently.
In my opinion only 11-a-side matches should count towards first-class
statsitics. But I'd be interested to hear arguments as to why some
"odds" games should also be listed.