Bowling Stroker Delivery Style
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Originally Posted: 4/3/2012; Updated: 8/5/2023The
bowling stroker delivery style is among many widely accepted types of releases used by competitive players throughout the world. The stroker style has been the most common type of delivery used by players ranging from professionals, amateurs, internationals, and youth players for many years. Let's address the
bowling stroker delivery style and learn a little about how this style fits into most bowler's games.
The following categories are the deliveries used to describe techniques ranging from the most powerful to the least powerful:
1. Two Handed Cranker
2. Two finger/no thumb
3. Cranker
4. Power Tweener
5. Tweener
6. Power Stroker
7. Stroker
8. Straight
9. Back-Up-ball
10. USA spinner
11. UFO spinner
12. Push ramp
13. Disable delivery ramps
14. Retractable handled bowling balls
By far and away, the most common delivery techniques are cranker, power tweener, tweener, power stroker, stroker, and straight ball deliveries. Back-up, two handed, thumbless, and spinner deliveries are the next most common groups of bowlers. Following are the spinner type players, disabled ramp and retractable handled delivery bowlers.
The stroker delivery fits in the category between the power stroker and straight player deliveries and is used by bowlers to create modest revolutions applied to the bowling ball with a small axis tilt generated at the
moment of release. Strokers are versatile on many types of conditions and from most angles in playing the lanes but specialize in playing the up-the-boards angles of delivery.
A stroker bowler uses a relatively straight wrist position, with or without a wrist support device, or perhaps a slightly tilted-back wrist position. The stroker bowler applies the slight axis tilt by means of the thumb exiting the ball followed soon after by fingers. This delivery applies a mild rotating action from behind the ball, or from on the side of the ball, the equivalent of one to two hours on the clock dial toward the side of the ball.
A stroker delivery creates a mild rotational axis tilt and a modest rev-rate. This style of bowler usually has about a shoulder high back swing producing medium ball speed with a smooth releasing action.
The stroker generates about a 19 miles per hour (mph) launch velocity with an instantaneous velocity at impact with the pins of about 16 mph and with an overall, average velocity of 16.5 mph.
This delivery produces a small bowling ball hook-motion, most noticeably from the break point to impact with the pins. The
angle of entry can range in measurement from 4 to 5 degrees from the break point into the pocket.
The stroker release is a very common release among top amateur players because it produces a controllable yet effective bowling ball motion used to control the break point and produce a high percentage of pocket hits and spare conversions.
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