91.   But like the XFL, the upstart professional football league, the success of digital books on the Web will depend on how the concept evolves over time.

92.   But Manning was not scarred as so many rookie quarterbacks are by sudden ineptitude when they take that giant step to professional football.

93.   But no one in professional football has more survival skills and no one has tacked through more hostile waves than Knox.

94.   But now, as professional football zooms toward the new millennium, the Raider Way no longer comes within shouting distance of the playoffs.

95.   But now is the time to look into how professional football players live and, unfortunately, how they die.

96.   But some black coaches admit that, in terms of hiring black head coaches, the college ranks, statistically, are worse than professional football.

97.   But Sunday will be the first time that his brother will be in the stands watching him play professional football.

98.   But that approach is at odds with those who control his destiny, and is becoming outdated in the win-now world of professional football.

99.   But the biggest body blow came in early February, when the company said it was forming a professional football league called the XFL.

100.   But the brothers have achieved much success in professional football.