Golf star Robert Allenby landed a hole in one ... dude's head at the Australian Masters tournament this morning ... after he shanked a tee shot into the crowd ... and knocked a spectator out cold.
The unlucky golf fan reportedly returned to consciousness in a matter of minutes -- and gave a thumbs up to the crowd as he was transported to a hospital.
GOTTA SEE -- Golf Fan KO'd at Australian Masters
11/12/2010 2:15 PM PST BY TMZ STAFF
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