21.   But Georgia Tech and metro Atlanta have tough competition in the race for nano supremacy.

22.   But it is facing tough competition from a couple of upstarts.

23.   But meadow wildflowers may have tough competition from nonnative grasses that tend to choke them out.

24.   But the athletes want to race in Europe, both to earn a living and to test themselves against the tough competition they will face in the Summer Games.

25.   But the MTA would face tough competition for that money from southern and western cities seeking federal aid to build new commuter rail and bus lines.

26.   But Toughbook gets some tough competition in the hard-core computing market, from a Fremont, Calif., company that most people have never heard of.

27.   But VA Linux will face tough competition.

28.   But throughout the ski industry, managers are looking for ways to lure skiers in times of tough competition.

29.   By then, the company was in tough competition with Topps, which made Bazooka bubble gum.

30.   Chicago, various New Jersey squads and New Zealand are also expected to offer tough competition this year.