Is it possible that effort does matter and that it not only shows up in the statistics but also helps in development? The same guy that is lazy running out pop-ups, might be lazy in conditioning, and might be mentally lazy and lacking focus when trying to command the strike zone, or working a strategy in an at-bat. all this translates into stats, which tell us that Ramirez does work counts, but that Soriano flails at pitches two feet out of the zone. I think it particularly matters in development. Players need to work at these skills, and a lack of work ethic could keep a player from reaching their ceiling. That is, if their team had cameras so they could work at reviewing their performances.