Left-handed person, especially in sport (8)

I believe the answer is:

sinister

(Other definitions for sinister that I've seen before include "Threatening the left in heraldry" , "On the left (of shield) (her.); wicked, criminal" , "Resist in way that is creepy" , "Forbidding" , "Suggestive of evil, threatening harm" .)

I've seen this clue in The Telegraph.

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