I have about 12 nike dri-fit shirts(about half are actual tennis shirts the other half just workout shirts). About 6 or 7 of them have little pulls i guees you would call them. On some of my older shirts there are several of these. My washing machine has never damaged any other type of clothing. I think it's possible that they could be caused by the zipper on my tennis shorts(even though i wash everthing inside out). I love the performance of my shirts but its making me mad that they are getting the little tears on them. I think i may have to wash the shirts seperate from the shorts but to me it seems a little ridiculous. Has anyone else had this problem?