Links

Pro Tour

ATP Tour – tennis men

WTA Tour – tennis women

PSA – squash men

WISPA – squash women

Learn to play

Fuzzyyellowballs - free tennis lessons in HD. Subscribe to their newsletter. One of the better ones out there.

Tennis one – subscription based. Very extensive gallery of pro strokes, slow motion videos, articles, etc.

Rules

Tennis – the official ITF rules with USTA comments. Includes “The Code”.

Squash – a collection of PDF files on rules, equipment, courts, etc.