Press B + Up to hit easy homeruns. This also works with pitchers.
Hit easier homeruns
When batting, press Up+B to increase the chances of hitting a homerun.
Hint: Hit a chopper
Press B + Left to hit a chopper to third base. About 70% of the time, you will hit an infield single. If you do not hit a chopper, you will hit a short grounder (slightly longer than a bunt). If it goes to third base, you have a better chance of getting a single then when it goes to the pitcher and/or first baseman.
Hit easier choppers
When batting, press Left+B to have a better chance at hitting a chopper (high bouncing ground ball). This will give your runners a better chance of getting on-base with an infield hit.