MELBOURNE — Under-pressure Sydney FC coach Ian Crook resigned Sunday after only six matches in charge, saying the extra attention brought by the arrival of Italian great Alessandro Del Piero had taken a toll on his health. Crook, a former Tottenham Hotspur and Norwich City midfielder, stepped down with the club languishing in eighth place in the 10-team A-League with just two wins this season. Sydney FC led the Melbourne Victory 2-0 before Alessandro Del Piero came off in the 66th minute. A half hour later, his A-League side had lost for the fourth time in six matches. — Agencies