A couple weeks ago, I went though our assessment process at @DrivelineBB to prepare for defending my PIL triple crown title next year. It's impossible to cover it all in one thread, but we'll start here

Alias: Cliff Holmes
HT: 5'11
WT: 230.9 lbs😬
156 days til Studs season Motion Capture Assessment.

Peak Velo: 90.4 mph. Not bad for throwing in your underwear with 48 reflective markers on you (not as hard as when I was throwing at the @WakePitchingLab later that week but still a solid starting point.

THREAD: Biomechanics breakdown for YELLOW

received 12% of the votes, and actually ended up throwing 92.4 mph, the second hardest of the 4.

what some voters said:

"more explosive lower body"
"quick arm path"
"opens hips last"
"stays closed longest"
"greatest impulse on ball" Here's the breakdown on Yellow. First, here's a few angles of his mechanics

THREAD w/ breakdown below:

The voting has ended!
- nearly 5,000 votes
- The most voted for was Blue at 46% and he actually threw the slowest: 90.9 mph 🤔
- Green was the winner at 95 mph!
- pitching mechanics are hard

Some thoughts and a breakdown of Green's mechanics below ⬇️ There were over 200+ comments on the original poll with tons of ideas about pitching mechanics and why you thought your vote was the hardest thrower. As everyone hopefully learned, it's a lot harder than it looks. Much of pitching and baseball coaching that exists is a "guess"

THREAD: Biomechanics & How we breakdown the motion capture report at Driveline and communicate that info to the athlete w/drill recommendation.

Taken from my mini-talk presentation at ABCA.

1. We record motion capture data from the athlete and recreate the 3d model in #Visual3d 2. We then apply physics to that model to obtain the kinematics and kinetics. These metrics are then organized into the report. Notes are then generated to help the athlete make sense of it all

Page 1: Cover page with athlete information

Page 2: Throwing Arm Kinematic Positions

BIOMECHANICS THREAD (long one, strap in):

Integrating assessment data into programming and using retest data to make sure we're on the right track: Changing Shoulder Abduction.

From a blog that @Bryan__Leslie and I wrote (edited by @OC____ ):

drivelinebaseball.com/2018/12/changi… Within the biomechanics reports, we obtain various kinematic metrics of the upper and lower body during the throwing motion.

Today, we're going to focus on shoulder abduction, a primary metric for arm path. The angle between the humerus and the torso in the frontal plane.