31.   Sampras and Agassi may lock horns this week in Philadelphia at the Comcast U.S. Indoor.

32.   She and Drew lock horns on a daily basis, trading insults and playing practical jokes on each other.

33.   So professor and student lock horns, back off and lock horns again, testily characterizing each other in the terms of national stereotypes.

34.   Sparks fly when the Judge and Leo Drummond lock horns.

35.   The avant-garde and the rear guard were locking musical horns.

36.   There will be several marquee pitching matchups on Opening Day, but none better than the one at Dodger Stadium, where Kevin Brown and Randy Johnson lock horns.

37.   They were supposed to lock horns like two billy goats and batter each other until only one was left upright.

38.   They locked horns on the question of buying a horse.

39.   Those two countries locked horns earlier this year over trade in cars and car parts until they reached a last-minute agreement.

40.   Two men run toward each other on the wire like bulls about to lock horns.