The differences between a major league and minor league baseball field are significant. For one, major league fields must be large enough to accommodate at least 8,000 spectators, whereas minor league fields only need to seat 4,000. Additionally, the infield of a major league field must be made of grass, while a minor league field can have either artificial turf or natural grass. Finally, the dimensions of home plate and the bases differ slightly between the two levels - in a nutshell, major league fields are just bigger and better overall.