Brad Mumma, a former teammate, pro pitcher, and friend of mine wrote this for the blog. I hope you enjoy.
A couple years ago I was watching a baseball tonight where they interviewed Stephen Strasburg who had just been selected #1 overall in the draft and was one of the most prolific prospects of all time. He was cycling through his pitches and explaining them and showing the grips. He said, I throw this slurve thing and I said to myself, oh no, he is going to get hurt once he faces the increased innings and workload that a pro pitcher faces. Unfortunately I was right and hopefully he’ll be the pitcher we’re all expecting him to be.
I ask every player who says they throw a slider how does it spin and can you show me? Most of the answers I get are wrong. I really didn’t know the answer until Rick Langford, the greatest pitching coach I ever had, challenged our entire staff of pitchers for the Dunedin Blue Jays. Now this is a high-A minor league team so you would expect we had the answer. No one knew. After his explanation I’ve never looked at this pitch and thought dangerous. This pitch has a black eye and everyone thinks it is so devastating on your arm. But the truth is the incorrect way of throwing any pitch will get you hurt, especially when you are talking about breaking pitches.
The answer is all in the spin. Most uninformed players and coaches, like I was before, think a slider is a sideways curveball or that it spins like a globe. That slurve is somewhere in between a 12-6 curve spin and the straight sideways globe spin. The correct spin of a slider is identical to the spin of the spiral of a football. You’re probably saying how can I make a baseball spin the spiral of a football? If you make both sweet spots on the ball (the sweet spot is the channel where the seams come close together) the points of the football you will be looking at the horseshoe with the opening facing towards you. Going along and slightly across the seam that makes up the side of the horseshoe you will be pulling the seam down to create the “spiral.” It is often taught to supinate (come under the ball like you are turning a door knob) the wrist at this point, this will get you hurt. It is possible to do this by pulling the seam straight down. At first, you will most likely see a little movement and the spiral pointing upward like a pass sailing over a receivers head. As you work on the pitch and learn to pull down and extend at the same time you will notice the spiral pointing straight at the catcher and eventually down towards the catchers feet for optimal movement.
The final point about this pitch is that it is a power pitch. It is to be thrown hard. Pitchers often like the break on pitch and try to make the break bigger, this is where you will probably change the way you are throwing and you could be hurt. It is also where most pitchers supinate their wrist. If you want a bigger break, then learn to throw a curveball.
Notice the word State that is the back point
of the football. As you go towards home
with front point of the football facing the
catcher you will pull the seam down. The
back of your hand should never face the
ground coming under the ball or you should
not twist like you are opening a door knob.
This can be accomplished safely.
The Truth about the Slider
A couple years ago I was watching a baseball tonight where they interviewed Stephen Strasburg who had just been selected #1 overall in the draft and was one of the most prolific prospects of all time. He was cycling through his pitches and explaining them and showing the grips. He said, I throw this slurve thing and I said to myself, oh no, he is going to get hurt once he faces the increased innings and workload that a pro pitcher faces. Unfortunately I was right and hopefully he’ll be the pitcher we’re all expecting him to be.
I ask every player who says they throw a slider how does it spin and can you show me? Most of the answers I get are wrong. I really didn’t know the answer until Rick Langford, the greatest pitching coach I ever had, challenged our entire staff of pitchers for the Dunedin Blue Jays. Now this is a high-A minor league team so you would expect we had the answer. No one knew. After his explanation I’ve never looked at this pitch and thought dangerous. This pitch has a black eye and everyone thinks it is so devastating on your arm. But the truth is the incorrect way of throwing any pitch will get you hurt, especially when you are talking about breaking pitches.
The answer is all in the spin. Most uninformed players and coaches, like I was before, think a slider is a sideways curveball or that it spins like a globe. That slurve is somewhere in between a 12-6 curve spin and the straight sideways globe spin. The correct spin of a slider is identical to the spin of the spiral of a football. You’re probably saying how can I make a baseball spin the spiral of a football? If you make both sweet spots on the ball (the sweet spot is the channel where the seams come close together) the points of the football you will be looking at the horseshoe with the opening facing towards you. Going along and slightly across the seam that makes up the side of the horseshoe you will be pulling the seam down to create the “spiral.” It is often taught to supinate (come under the ball like you are turning a door knob) the wrist at this point, this will get you hurt. It is possible to do this by pulling the seam straight down. At first, you will most likely see a little movement and the spiral pointing upward like a pass sailing over a receivers head. As you work on the pitch and learn to pull down and extend at the same time you will notice the spiral pointing straight at the catcher and eventually down towards the catchers feet for optimal movement.
The final point about this pitch is that it is a power pitch. It is to be thrown hard. Pitchers often like the break on pitch and try to make the break bigger, this is where you will probably change the way you are throwing and you could be hurt. It is also where most pitchers supinate their wrist. If you want a bigger break, then learn to throw a curveball.
Notice the word State that is the back point
of the football. As you go towards home
with front point of the football facing the
catcher you will pull the seam down. The
back of your hand should never face the
ground coming under the ball or you should
not twist like you are opening a door knob.
This can be accomplished safely.