There are many professional organizations that are putting a premium on pitchers who throw really good curveballs.  In fact, several pitchers in the Major Leagues have been very successful over the past few seasons with the curveball as the predominate pitch (Rich Hill, Lance McCullers) and several others have made it a huge part of their otherwise impressive arsenal.   

The goal of the curve ball
The curveball is predominately a swing and miss pitch, but there are two great ways to utilize a curveball.  The overlying philosophy of a curveball is to make it look like a ball when it is a strike and look like a strike when it is a ball.
There are three types of curveballs that will accomplish this goal, the one that starts in the zone and drops or slides out, the one that starts at a same handed hitters shoulder and snaps into the zone or one that starts outride the zone to an opposite handed hitter and snaps back into the zone. 
The other major use of the curveball is as a get-a-head pitch.  Many teams (mine included) teach to attack fastballs early in the count and lay off breaking balls until late. This means that if you have the ability to throw a curveball over for a strike on the first pitch, most teams and hitters will take it.  The best part about that is you don’t have to create very much spin and make it break very much, it just has to be spinning and be a strike.
Be weary though, very good hitters will often sit on or guess curveball first pitch and one without much break or spin is a very, very hittable pitch to a good hitter.  This “get me over” tactic would be best used against above average, average, or below average hitter.  You will probably still want to try to create a lot of spin against better hitters.
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