I'm playing on Hall of Fame. The human contact and timing sliders are both one away from maxed out. The thing is that I am using the same sliders and the same difficulty level as I used for 15 and I'm getting a three or four times as many foul balls as I got in 15. Ultimately, my overall numbers (e.g. batting average, home runs, walk rates, strike out rates) are all pretty realistic. So this is a minor complaint. It's a little annoying.