The opportunity cost of a baseball bat is best defined as

The opportunity cost of a baseball bat is best defined as the "v alue of the highest-valued alternative given up to get a baseball bat".

Opportunity cost alludes to an advantage that a man could have gotten, yet offered up, to make another course of move. Expressed in an unexpected way, an open door cost speaks to an elective surrendered when a choice is made. This cost is, hence, most applicable for two totally unrelated occasions.