I've never seen Billy Hamilton reach second base on two bounces. Revere misses his cutoff man all the time - but the under, not the over. As for the main topic, defensive stats' problem is they are too sparse, period. Waiting for 3 years' data is not a practical solution. Whereas a season contains only a few dozen interesting plays to consider for the average outfielder, his batting numbers can be contemplated usefully because of the rich variety - it's not simply 700 or so PA, it's that each PA has several pitches, each of which required skill (or lack) to decide on, leading to literally thousands of decisions per season on which the stats get based. Defense is thus approximately 1% as rich in information to work with. And yet defense is important to the team's success. An unsolved dilemma, at present.