11.   How could he perform against such intense competition with his head so messed up?

12.   How did Wagner perform against left-handed hitters at night?

13.   How L.A. performs against Vancouver on Monday at the Forum could be telling.

14.   If he performs well against the Oilers and feels comfortable, then he might play in the regular-season opener.

15.   It remains an honor to perform against the Americans, but it is no longer a privilege.

16.   Jay B. Silverman, a senior biotech analyst with Robertson Stephens Inc. in New York, said he expects Angiomax to perform well against heparin.

17.   Lassiter and McBride were initiated this way, and were well prepared to perform together against Costa Rica.

18.   Later, students step forward one by one to demonstrate their formal exercises, or kata, performed against imaginary opponents.

19.   Phenotypic tests assess how various drugs directly perform against particular viral strains.

20.   Over all, how do sector-neutral funds perform against their indexed and actively managed siblings?