Bowling Event Standards

Bowling

Bowling event standards are the first part of the event delivery process to be captured when coding a match. This can be broken down into

1. Pre Delivery 

2. Plotting Delivery

3. Delivery Details

1. Pre-Delivery

1a. Ball Status

New Ball - Indicates first delivery with a brand-new ball. In limited and t20 formats this will only be required once, however in multi day format maybe required twice.

Replacement Ball - Indicates first delivery with a replacement ball used in place of a damaged or lost ball.

1b. Over/Round

Over the wicket - When the bowler bowls with their arm which is nearest to the stumps.

Round the wicket - When the bowler bowls with their arm which is furthest from the stumps.

2. Plotting Delivery

Depending on the level of match, varying camera angles and technology could create difficulty in plotting the X/Y of a delivery. It is encouraged if available that Hawkeye or Athletes AI are connected - if you need more information, please click through to following links (TBC).

2a. Pitch Impact

Pitch Impact is plotting the exact location that the delivery hits the pitch. There are a few considerations worth noting for plotting the pitch impact.

1.  Pitch impact map available only caters for only 13 metres of the pitch ,so this should be taken into consideration when coding, as it isn't a full respresentation of the pitch.

2. As a byproduct of the above & previous research comparing automated tracking and coders, Humans have the tendency to "over pitch" deliveries (Pace bowlers 1-1.5m, Spin bowlers 0.5-1m)

- Coders as a result should try AthleteAI if available

- After initially plotting delivery, review deliveries periodically when time permits, so that reflection and adjustment to conditions can be made

- Seek feedback from reviewers

*Note reviewers have the ability to overwrite pitch impact via collaborative coding. 

2b. Beehive

Beehive are done after pitch impact and require more detail due to the complexity of how the batter has interacted with the delivery. 

There are 2 ways you can plot beehive relatively too - which can then be viewed in a 2D or 3D visual.

Flat - Using a batter (scale to height if applicable) to reference where contact has been made.

Using perspective - Showing the stumps and where the ball has passed the batter

3. Delivery Details 

3a. Bowler Variation

A delivery which differs from the bowler stock ball in an attempt to deceive the batter. This could involve change of speed in delivery, use of fingers to provide revolutions or bowling the delivery in different crease positions

• In matches where Hawkeye or speed guns are available this should assist in capturing bowler variation
• Bowlers tend to use variation in an increased capacity towards to back of an innings

Below are some example of types of variations you may see within different bowler types

Pace Bowling

Back of the hand - Delivery with a grip and action where the bowler releases the ball from the back of their hand, rather than the conventional front of the hand

Knuckle Ball - A type of slower delivery where the ball is released with the knuckles to reduce its speed

Leg Cutter - A fast bowler’s delivery where the bowler run the finger down the inside of the ball and imparts spin and change of speed on delivery 

Off Cutter - A fast bowler’s delivery where the bowler run the finger down the outside of the ball and imparts spin and change of speed on delivery 

Spin Bowling

Arm Ball - A delivery that doesn’t spin much and travels straight on with the arm, typically bowled by an off-spinner.

Googly -A delivery that appears to be a leg spin but turns the opposite way, bowled by a leg-spinner.

3b. Ball Speed (TBC)