Every Pokeball in Pokemon has a purpose. Whether it's the original Pokeball for looking cool or the Quick Ball for getting in some quick catches, there's a time and place for each one in the series. Some are event-exclusive, while others are there to look pretty. Some Pokeballs are great for getting Pokemon ready for battle in an instant, while others are there to be luxurious bribes for a new member of the team.
And by weak, I mean anything below Level 29. Using a Nest Ball against any Pokemon between the levels of 1 and 29 gives you a percentage boost depending on the level, the equation exactly being ÷ 10). The lower the level, the more successful you can be with a Nest Ball. Otherwise, this Pokemon is just earthy-looking, having the same strength as your standard Pokeball. Repeat Ball Image by Pokemon Co If you want to catch a Pokemon again, the Repeat Ball will become your best friend.