The most common and most likely answer to this crossword clue is the 9 letter word WIMBLEDON
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More clues leading to the result WIMBLEDON
- We put on strapping for broken limb in tournament
- I’m drained, enthralled by upset today in tennis tournament
- Eccentric Lib Dem won southwest London constituency
- Mayfair doctor tempted to find location further south
- Likely place for tennis elbow, mind out!
- Doctor taken in by trick put on in London suburb
- West Indian doctor seduced in London suburb
- For the most part media blown away where Federer enjoyed great success
- Mercurial Lib-Dem won over a London suburb
- I'm drained, enthralled by upset today in tennis tournament
Buddy explains!

The straight part
We know that "tennis tournament" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tennis tournament = wimbledon.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.