To get easy extra base hits, adjust the following AI settings.

AI Outfielder Speed: Move the slider to the left
AI Outfield Reaction Speed: Move the slider to the left

You will get easy extra base hits any time the ball goes into the gap because it will take the outfielders a long time to get to the ball before throwing it back in. This is great for unlocking cards for players who need multiple base hits (for example, Mike Piazza and Johnny Estrada), total bases (for example, Matt Holiday and Brian McCann) and hitting for the cycle (for example, Hanley Ramirez, Todd Helton, Mark Ellis). You will also be more likely to hit inside the park homeruns, especially if you play in a park with quirky dimensions or a deep center field (for example, AT&T Park and Dolphins Stadium). Getting an inside the park homerun will count towards unlocking cards, including those for the two pitchers, Carlos Zambrano and Micah Owings.