Python Analyzing Baseball Data With Python

PyCon JP 2016 Talk Session 2016/9/22 Shinichi Nakagawa, Ai Makabi

Starting Member

• Who am I ?

• Hack→! Hack!!

• (MLBAM) Python & (pitchpx)

• Jupyter lab, pandas, matplotlib

• LT

•

• VS ※

• @amacbee

•

Who am I?

• Shinichi Nakagawa(@shinyorke)

• Python ※

• visasQ( ) Web Engineer

• Pythonista, Agile & Scrum & Kanban coach, Baseball Analyst

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•

8-7 9 .

visasQ?

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• Django .

• https://service.visasq.com

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hack?

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• (@shinyorke) /MLB

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Hack! PythonPyCon JP 2015

http://www.slideshare.net/shinyorke/hackpython-pyconjp

Hack! PythonPyCon JP 2015

http://www.slideshare.net/shinyorke/hackpython-pyconjp

Hack! PythonPyCon JP 2015

http://www.slideshare.net/shinyorke/hackpython-pyconjp

Hack!→ Hack!!

• etc…

•

• ( )

( , etc…)

• …

•

MLB at BAT MLB

• MLB

• PC TV

• MLB.TV

•

MLBAM Dataset(Pitch f/x)

• MLB Advanced Media(MLB ) XML

.

• PITCH f/x

Statscast Sensor ( / ) .

• ( )100 .

• Copyright , OK.

• Github .

• http://gd2.mlb.com/components

1 (2016/4/6 VS )

http://gd2.mlb.com/components/game/mlb/year_2016/month_04/day_06/gid_2016_04_06_lanmlb_sdnmlb_1/inning/inning_1.xml

※ pitcher=“628317"

MLBAM Dataset( / )

• etc…

•

• ( )

• (Relation)

•

(≒ ).

Analyzing Baseball Data with R

• MLBAM Retrosheet(※ Hack

)

• R(R Studio, pitchRx)

• https://www.amazon.co.jp/dp/B00GBC36S4

PyCon Python

pitchpx - Getting MLB dataset

• MLBAM XML

CSV .

• pitchRx(R) (@shinyorke) .

• Python 3.3.x ( :Legacy Python!!!).

• BeautifulSoup( ),click( )

.

• PyPI .

• Jupyter, pandas .

$ # Python 3.3 ( Python 3.4 )$ pip install pitchpx$ # 2015/8/1-8/12$ pitchpx -s 20150801 -e 20150812 -o .

Python

• R Python .

•

(Python)

• Web

API Python .

• Hack

• Jupyter + pandas + matplotlib ,

PyData .

• Jupyter lab .

• INPUT/OUTPUT, pandas.

• matplotlib,seaborn .

• Qiita, .

(Python )

…

LT

• Yu Darvish (@shinyorke)

• 2016 (@amacbee)

※ ( )

• VS (@shinyorke)

Yu Darvish( )

•

•

• (2015) TJ( )

Ichiro Suzuki( )

• & .

• ( ) .

• .

Joey Votto( )

• (2007-2015) .

• .

• 51 PyCon ( ).

Yu Darvish

Yu Darvish(2013, 2016)

• TJ( ) ( etc…)

• TJ (2013) (SL) (FC)

• TJ (2016) 4 (FF) 2 (FT) SL FC

• !?

2013(TJ ) 2016(TJ )

※ 'CH': 'Change-up', 'CU': 'Curveball', 'EP': 'Ephuus', 'FA': 'Fastball', 'FC': 'Cut Fastball', 'FF': 'four-seam Fastball', 'FO': 'Forkball', 'FS': 'Split-finger Fastball', 'FT': 'two-seam Fastball', 'KC': 'Knuckle Curve', 'KN': 'Knuckleball', 'SC': 'Screwball', 'SI': 'Sinker', 'SL': 'Slider', 'UN': 'Unknown'

8

•

http://www.sponichi.co.jp/baseball/news/2016/08/03/kiji/K20160803013085860.html

• ( ) ( )

• ?

5 7 8

• ( DL )

• 5-7 8

• 4

2016/5-7 2016/8

※ 'CH': 'Change-up', 'CU': 'Curveball', 'EP': 'Ephuus', 'FA': 'Fastball', 'FC': 'Cut Fastball', 'FF': 'four-seam Fastball', 'FO': 'Forkball', 'FS': 'Split-finger Fastball', 'FT': 'two-seam Fastball', 'KC': 'Knuckle Curve', 'KN': 'Knuckleball', 'SC': 'Screwball', 'SI': 'Sinker', 'SL': 'Slider', 'UN': 'Unknown'

Four seam

• TJ 4 !?

• 2013 (called strike)

• 2016 (swinging strike)

•

2013(TJ ) 2016(TJ )

Ichiro VS Votto

( )

•

51

http://blog.livedoor.jp/nanjstu/archives/49340618.html

• 3,000

( )

VS (2016 )

•

• (FF)

• (FT) ( )

• (42) (33) !?

Ichiro Suzuki Joey Votto

※ 'CH': 'Change-up', 'CU': 'Curveball', 'EP': 'Ephuus', 'FA': 'Fastball', 'FC': 'Cut Fastball', 'FF': 'four-seam Fastball', 'FO': 'Forkball', 'FS': 'Split-finger Fastball', 'FT': 'two-seam Fastball', 'KC': 'Knuckle Curve', 'KN': 'Knuckleball', 'SC': 'Screwball', 'SI': 'Sinker', 'SL': 'Slider', 'UN': 'Unknown'

? (20 )

??

• ( 165cm) 2

• … (SL).

• ?!?!?!?

• !?( )

Jose Altuve(26) Kris Bryant(24)

※ 'CH': 'Change-up', 'CU': 'Curveball', 'EP': 'Ephuus', 'FA': 'Fastball', 'FC': 'Cut Fastball', 'FF': 'four-seam Fastball', 'FO': 'Forkball', 'FS': 'Split-finger Fastball', 'FT': 'two-seam Fastball', 'KC': 'Knuckle Curve', 'KN': 'Knuckleball', 'SC': 'Screwball', 'SI': 'Sinker', 'SL': 'Slider', 'UN': 'Unknown'

× ×

VS Part2(Hit Zone)

• X (start_speed, ), Y , (pa_event_cd)

• pa_event_cd (20), (21), (22), (23)

※Retrosheet

• pitch_type orz

※ 'CH': 'Change-up', 'CU': 'Curveball', 'EP': 'Ephuus', 'FA': 'Fastball', 'FC': 'Cut Fastball', 'FF': 'four-seam Fastball', 'FO': 'Forkball', 'FS': 'Split-finger Fastball', 'FT': 'two-seam Fastball', 'KC': 'Knuckle Curve', 'KN': 'Knuckleball', 'SC': 'Screwball', 'SI': 'Sinker', 'SL': 'Slider', 'UN': 'Unknown'

Ichiro Suzuki Joey Votto

VS Part2(Hit Zone)

• X (start_speed, ), Y , (pa_event_cd)

• pa_event_cd (20), (21), (22), (23)

※Retrosheet

• pitch_type orz

※ 'CH': 'Change-up', 'CU': 'Curveball', 'EP': 'Ephuus', 'FA': 'Fastball', 'FC': 'Cut Fastball', 'FF': 'four-seam Fastball', 'FO': 'Forkball', 'FS': 'Split-finger Fastball', 'FT': 'two-seam Fastball', 'KC': 'Knuckle Curve', 'KN': 'Knuckleball', 'SC': 'Screwball', 'SI': 'Sinker', 'SL': 'Slider', 'UN': 'Unknown'

Ichiro Suzuki Joey Votto

•

4

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•

,

(& ISSUE )

- -

http://sportsworld.nbcsports.com/bill-james-statistical-revolution/

“”” , .

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. “”” -

• Kawasaki.rb #kwskrb http://kawasakirb.github.io/PyCon JP 2014 2016,

• BPStudy #bpstudy http://bpstudy.connpass.com/ BPStudy Hack .

•

& PyCon JP 2016 !

Shinichi Nakagawa(Twitter/Facebook/visasQ:@shinyorke)