Answer: faults

AnswerCrossword Clue
FAULTS

Earthshaking matters?

FAULTS

Flaws

FAULTS

Earthquakes causes

FAULTS
Groundbreaking discoveries?
FAULTS
Tennis stat
FAULTSWeaknesses
FAULTSDefects
FAULTSPeccadilloes.
FAULTSImperfections.
FAULTSSome tennis serves
FAULTSSan Andreas and foot
FAULTSErrors at Wimbledon
FAULTS"The greatest of ... . . . " (Start of a Carlyle quote)
FAULTSOnes running through California
FAULTSBad serves
FAULTSServing goofs in tennis
FAULTSThings running through California
FAULTSSan Andreas and the like
FAULTSSan Andreas, and the like