Cryptic crossword clue
In match, start to play with clubs in a calculated way 10

The most common and most likely answer to this crossword clue is the 10 letter word TACTICALLY

I've seen this crossword clue in The Guardian
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Buddy explains!

The straight part
We know that "in a calculated way" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in a calculated way = tactically.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does TACTICALLY mean?

TACTICALLY adverb
  1. In a tactical manner; in a manner calculated to achieve some end.
  2. Using tactics

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