There are many advantages to using a fungo bat. If you are a coach or a parent looking to improve your player's defensive skill set, you're going to want and need a fungo bat. A normal adult wooden baseball bat will weigh around 27-31 ounces, and after a couple of rounds of pop-flys, it is going to feel like you just went through a full-on workout. With the help of a fungo bat, you will be able to hit ground balls and pop flys all day without getting fatigued.  The barrel on a fungo bat will typically be 2 1/4 inches in diameter which greatly helps increase your control over the bat through the hitting zone. While the barrel has a much more thin diameter, it is also much longer in comparison to a normal wood baseball bat. This larger hitting surface and smaller barrel combine to give coaches and parents quick swing speeds with precise accuracy. 
A fungo bat's size and weight make it easier to operate with one hand or two. Coaches can toss a ball up with one hand and hit pop flies or ground balls farther and with greater accuracy with a fungo bat than with a regular bat. According to an article by LJWorld, high school baseball coach Brad Stoll said fungo bats allow him to hit more balls because heavier regular bats would "wear you out." Fungo bats should be used as a practice tool only and should not be used to hit a pitched ball.
The most obvious reasons to utilize a fungo bat is the fact that it’s lightweight. It’s handy to coaches when conducting fielding practice since he or she has to hit plenty of balls to warm up his or her players. What is for sure is that hitting countless balls during practice can be tiring. Consequently, having a bat that’s lighter weight is magical at preventing the coach and/or players from getting tired.
Chris Coste, a former catcher for the Philadelphia Phillies who coaches at Division III Concordia, in Moorhead, Minn., agreed. “When baseball is every single day, you’ve got to do things differently,” he said. “In the big leagues, they get so many ground balls during batting practice that infield is more for the fans and more for the scouts and things like that. At this level, we need it, and we love doing it.”
Fungo bats are typically only used by coaches, to consistently place grounders and pop flies to their fielders for practice purposes. And with a fungo bat in their hands, some coaches can pull off wicked accuracy – as one story goes, the late California Angels player and coach Jimmie Reese once shot an 82 on an 18-hole golf course using nothing but a putter and a fungo bat.
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Secondly, the first base fungo hits balls to the third baseman, who turns a double play with the second baseman to the normal first baseman, while the third base fungo hits balls to the shortstop, who throws to a shortened deep firstbaseman (this means that the deep firstbaseman stands closer to the shortstop than normal, so that the throw across this infield is the correct distance - this does NOT mean that the deep man stands any closer to the normal first base position - this length should always be sufficient)

Fungo bats are typically only used by coaches, to consistently place grounders and pop flies to their fielders for practice purposes. And with a fungo bat in their hands, some coaches can pull off wicked accuracy – as one story goes, the late California Angels player and coach Jimmie Reese once shot an 82 on an 18-hole golf course using nothing but a putter and a fungo bat.

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