Hi welcome to Health care magic forum.
thanks for calling H.C.M.Forum.
You had pain abdomen on left lower abdomen after bowling. It is again paining while bowling only, and not during other games.
It appears to be a muscle catch, due to stretch on the left side, while bowling,that is why it is paining while there is stretch on that side.
Other causes could be urinary tract infection
, stones in the urinary tract
, or infection of the descending colon
I advise you to consult a surgeon for diagnosis and treatment. You may need to have M.R.I. besides other routine tests for confirmation.
Wishing for a quick and complete recovery.