28 across
Demonstrate
in
favour
of
cricket’s
longest
format
(7)
Demonstrate in favour of cricket’s longest format (7)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
The definition is Demonstrate — to publicly object or march. The wordplay builds the answer from in favour of, giving you PRO, followed by cricket's longest format, which is a TEST match.