from django.db import models
from django.core.validators import MaxValueValidator, MinValueValidator 
class Match(models.Model):
             overs = models.IntegerField(validators=[MinValueValidator(1), MaxValueValidator(100)])

I’ve tried using the PositiveIntegerField but I believe that you cannot set a max value for that through Django – I’m not sure.

PositiveIntegerField ensures no integer less than 0 will be accepted. Your validators seem to handle the minimum and maximum values correctly. All you are missing is default for the default value. So something like

overs = models.PositiveIntegerField(default=10, validators=[MinValueValidator(1), MaxValueValidator(100)])