watched the match on tv at a friend's house who is also a big spurs fan -- we noticed something that someone at the game could clarify -- it appeared that davids was a shadow to alonso which would result in his 'quietness' -- we've both noticed this before and usually figure that it may be a tactic to take xabi out of the game and deal with gerrard
is this what is happening??
Sort of.

Alonso and Davids have met before, they are old friends.
Real Sociedad - Juventus
Real Sociedad - Barcelona
Liverpool - Tottenham
When he came with Juve, Edgards ws the same overrated player with more speed. Alonso was the shadow of Edgars, and this had a tough day (1). In Barcelona he was already known, including the problems Davids has to dribble. It was quite funny to see Alonso pressing Davids (he did that 3 or 4 times, pursueing Davids), it was obvious ke knew what are David's weak points

Sabre
(1) DAvids is a player that do not do complicated things, he runs a fair amount of kilometres and his work is good. But when he is severely pressed, he's erratic. Or so he was in Barcelona and Juventus in the last years