It was so obvious with Steve Bucknor with the number of times he gave Sachin out... sometimes the ball was an inch far from the bat... and clearly visible on replays...

This after a couple of yrs Bucknor was considered one of the best umpire. He was good until he decided to go after Sachin. Finally the BCCI formally loged a ccomplaint and had to threaten not play India in tournaments where Bucknor is referring...

http://www.skysports.com//story/0,,12379_3030538,00+en-USS_01DBC.html

He would have finished Sachin's career had he continued. Anyody else would have given up. Actually during that period Sachin was so fustrated as when ever he was set this guy used to give him out and on other times he used to play some desperate stroke and get out. It was to get out of this phase Sachin started playing defensively so there are less errors. And only in the last few years has Sachin started to play like before.