ダブる

What does ダブる mean in English?

1. to be duplicated; to be repeated(v5r, vi)
2. to overlap; to fall together (of dates, etc.); to coincide(v5r, vi)
3. to repeat (a failed course, school year, etc.)(v5r, vi)
4. to make a double play(v5r, vi)
5. to make a double fault (in tennis)(v5r, vi)