unreturnable serve in tennis: crossword clues

Matching Answer
Confidence
ACE
60%
ACES
60%
LET
60%
NET
60%
BORG
60%
ACED
60%
ACER
60%
OPEN
60%
RENEE
60%
GREG
60%
e.g. Greek Cheese
e.g. O?D (Use ? for unknown letters)