small ball

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A strategy or style of offensive play in which runs are scored by getting batters on base and advancing them incrementally, as by sacrifices and stolen bases, rather than by slugging power.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun slang A baseball strategy that relies on baserunning, singles and hitting for average rather than hitting home runs