The most common and most likely answer to this crossword clue is the 9 letter word SCORECARD
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More clues leading to the result SCORECARD
- Second string holding contest up? It records performance
- A record’s for playing around clubs?
- Twenty joining club maybe — a record at a sports ground
- Mixing short Cash record — round record?
- Nick, the eccentric, produces course record
- Where one might record hit music for film character?
- Frindall used it for developing records about cricket averages primarily
- Detailed sack record botched in contest's official log
- Sports fans need this accountant to go through fudged records
- Scratch player’s last in rogue course record
Buddy explains!

The straight part
We know that "contest's official log" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case contest's official log = scorecard.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 SCORECARD mean?
SCORECARD noun- A printed card allowing spectators of a game to identify players and record progress.
- A tabular representation of the most important statistics of an innings or match.