Tuck your trail arm in to avoid flipping at the ball
Keep the trail (right) arm tucked in rather than letting it get away from your body. Saguto says if the right arm gets out, you start flipping at the ball and get bad contact, so he tucks it in while keeping the lead arm straight.
Channel: SagutoGolf
Watch official source at 1:19Why this context matters
One of the coach's four setup keys (trail arm).