### Instruction:
How would you categorize the following sports into two groups; football, rugby, cricket and baseball

### Response:
If I were to categorize these sports into 2 groups I would split them up into striking and invasion-based games. Football and Rugby are both invasion games, meaning two teams must attack their opposition's territory in order to score points. Baseball and cricket both involve two teams in set positions who must strike a ball in order to score points.