From the time the catcher touches the ball til the ball reaches 2nd for a good catcher is 1.6 to 1.7 seconds.
If the catcher has a good enough arm to, then yes. It is the fastest way.
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To be good at rounders you have to be a very good catcher, have a good aim, throw quite far and accurate. You also have to be quite fast to get a full rounders.
My catcher gear last year was Under Armour. Under Armour is the best catcher gear money can buy. All the other brands doesn't protect the chest as well. The Under Armour chest piece is broader on the shoulders and has more padding. I suggest the Under Armour catcher gear.
Generally speaking a catcher throws back to the pitcher, each pitch he catches. This throw however, is a direct, straight one, but has a velocity 75 miles per hour or less. The catcher's most throws travel a short distance to the pitcher who stands 50 feet 7 inches away ( generally ) However, often times a catcher is involved in a "live" throw which is thrown to stop a base-runner from stealing base, or the catcher is throwing the ball to one of his fellow players in an ongoing play that requires him to throw with accuracy and good speed. In such situations, the catcher may throw a baseball anywhere between 75 to 85 miles per hour.
It is not in the rule book that a catcher must wear a catcher's glove, however, it is a very good to do so. The hardest throwing pitchers in the MLB throw in the mid to high 90's. Without a catcher's glove, you would break your hand and fingers.
Under 3 seconds is a good time.
It's supposedly considered bad luck. I think some of it applies to practice as well. When a pitcher is warming up on the mound, he will signal the catcher when he's going to throw one more pitch. After that pitch, the catcher might take a practice throw toward second base. Since most catchers are right-handed, it's much easier for him to throw to third after a strike out, anyway. It is good practice to get that throw to third base in case of a steal, and it's the only time during the game that a catcher can practice it.