11.   Here I was, getting my hair cut in a small window of opportunity, and opportunity was knocking.

12.   In each case, opportunity knocked and Mamula made the most of it.

13.   It could happen in a few years when opportunity knocks for Nomar Garciaparra or any of a handful of would-be Vaughns on the roster.

14.   Laura House turned her back on a perfectly good teaching career when opportunity knocked.

15.   One night at a party, opportunity knocked in the guise of a slightly inebriated and excruciatingly handsome pilot.

16.   Opportunities knocked in the fifth and ninth innings Saturday.

17.   Rarely does opportunity knock twice, right, Jerry Colangelo?

18.   Sometimes opportunity knocks twice.

19.   Swifty, a moniker he only allowed run Fordham University before matriculating at Brooklyn Law School, where opportunity knocked for the first of many times.

20.   The newest soon-to-be member of the Atlanta Braves starting rotation was flying high when his opportunity knocked.