11.   Despite putting out her best effort, she was unable to beat her longtime tennis rival.

12.   Despite my best efforts, I never found out who she was.

13.   He lost the campaign despite the best efforts of his supporters.

14.   Our best efforts did not avail.

15.   Notwithstanding the best efforts of the distinguished panel, the findings were arrived at after a one-sided presentation of evidence and argument.

16.   However, objects decay despite our best efforts to conserve them.

17.   Although Nabel is optimistic about the prospects for his vaccine he points out that diseases often thwart the best effort of medical research.

18.   Although Grudzielanek was starting to warm up, hitting in seven of his past eight games, Sunday was his best effort with the Dodgers.

19.   And for all the precarious labor, best efforts often go unnoticed.

20.   And our bodies did creak, notwithstanding our best efforts to achieve comfort and support.