The controls for fielding are fairly straightforward, although it's still the hardest aspect of the game. You can enable the assisted fielding and assisted throwing options to let the computer handle the dirty work. Thankfully, they're separate toggles this time around. The computer AI is not exceptional, but it is competent enough to be realistic. Fielding is the most important role of the AI and it does this fairly well.
Outfielders do a good job of cutting balls off and playing balls off of the wall.
Infielders make the routine plays as you would expect them to, although you still sometimes see infielders running into the outfield chasing after singles. Leaping grabs and diving stops provide the occasional highlight play. Hitting-wise, the AI seems to stay off anything that strays from the strike zone, so you can't really fool the batter into chasing anything. This causes the game to lose some of the strategy in setting up pitches, as batters don't behave like their real life counterparts. Most of the time I just aimed at the corners and hoped for the best.