I got a thin long scratch on my Apple Watch Sport . It's hard to see sometimes but in well lite area's is very obvious. I think a steel thing on a school lab table probably did it when I decided to take a good passing time power nap and lay down on the table.... I'll have a picture of this steel thing tomorrow. If anyone knows how to "fix" it or something let me know. I've heard people have used toothpaste but I would love to hear someone who has tried it on how it went. Just wanted to share my sad story