21.   The uncertain start came a day after similar worries prompted investors to sell off tech stocks and put their money into blue chips.

22.   There are similar worries about Seles and Sampras, who were also affected by injuries in recent days.

23.   Thomas Mockaitis, a history professor at DePaul University, voiced similar worries.

24.   Those two countries plus Belgium have similar worries about Moroccan tomato exports.

25.   Western Samoa has a similar worry with tour captain Pat Lam still nursing a thigh injury.

26.   Agassi has similar worries.

27.   But Brent ended the week higher, firming on fears of a strike on Norwegian oil platforms in the North Sea and on similar worries in Nigeria.