[cardinalbird5]

HR/9 does nothing except for simming.

Pitching clutch is when RISP and you'll notice your controller start to vibrate. A good pitching clutch makes your player relaxed and feel like it is a normal situation.

BB/9 HELPS alot IMO. It makes the meter, PP, or whatever using easier to use. You also seem to get more black calls and just seem to spot your pitches overall better.

K/9 I assume helps a lot with swing and misses. This probably goes up against the hitter's plate vision. If his PCI isn't even close to the ball then expect a lot of swing and misses.

H/9 probably helps you get a lot more grounders and avoid the fat part of the bat. Although I am not exactly sure how this is implemented in the middle of a game.

So avoid HR/9, but I'd look into BB/9 and K/9.