knitr::opts_chunk$set(echo = TRUE, message = FALSE, warning = FALSE)
library(readxl)
library(dplyr)
##
## Attaching package: 'dplyr'
## The following objects are masked from 'package:stats':
##
## filter, lag
## The following objects are masked from 'package:base':
##
## intersect, setdiff, setequal, union
library(ggplot2)
library(knitr)
# Load the data
data <- read_excel("C:\\Users\\Franco Castagliuolo\\OneDrive - Bentley University\\Valley 75.xlsx")
# Filter the data for the pitcher Ben Alekson
Ben_Alekson_data <- data %>%
filter(Pitcher == "Alekson, Ben")
# Create a detailed table for each pitch
detailed_pitch_table <- Ben_Alekson_data %>%
select(AutoPitchType, RelSpeed, SpinRate, SpinAxis, HorzBreak, InducedVertBreak, PitchCall, RelHeight, RelSide, Extension) %>%
rename(
ReleaseSpeed = RelSpeed,
Tilt = SpinAxis,
HorizontalBreak = HorzBreak,
InducedVerticalBreak = InducedVertBreak,
ReleaseHeight = RelHeight,
ReleaseSide = RelSide
) %>%
mutate(
ReleaseSpeed = round(ReleaseSpeed, 2),
SpinRate = round(SpinRate, 2),
Tilt = round(Tilt, 2),
HorizontalBreak = round(HorizontalBreak, 2),
InducedVerticalBreak = round(InducedVerticalBreak, 2),
ReleaseHeight = round(ReleaseHeight, 2),
ReleaseSide = round(ReleaseSide, 2),
Extension = round(Extension, 2),
ClockTilt = round((Tilt / 30) %% 12, 1) # Interpret Tilt as clock face
)
# Display the detailed table
knitr::kable(detailed_pitch_table, caption = "Detailed Pitch Table for Ben Alekson")
Detailed Pitch Table for Ben Alekson
Four-Seam |
90.68 |
2093.96 |
219.31 |
14.65 |
19.14 |
StrikeCalled |
5.87 |
0.95 |
4.84 |
7.3 |
Sinker |
88.72 |
2037.76 |
219.62 |
14.94 |
19.29 |
FoulBallNotFieldable |
5.92 |
0.93 |
5.19 |
7.3 |
Changeup |
81.57 |
1549.61 |
261.75 |
15.37 |
3.67 |
InPlay |
5.81 |
1.06 |
4.79 |
8.7 |
Sinker |
90.54 |
2094.41 |
228.25 |
14.75 |
14.40 |
BallCalled |
5.85 |
0.92 |
4.88 |
7.6 |
Four-Seam |
89.50 |
2105.23 |
216.80 |
12.95 |
18.55 |
BallCalled |
6.02 |
0.92 |
4.97 |
7.2 |
Four-Seam |
89.79 |
2142.42 |
220.48 |
14.37 |
18.09 |
StrikeCalled |
5.97 |
0.91 |
4.94 |
7.3 |
Changeup |
81.39 |
1516.72 |
261.31 |
17.09 |
4.07 |
StrikeCalled |
5.91 |
0.92 |
4.88 |
8.7 |
Four-Seam |
91.64 |
2209.91 |
224.04 |
15.99 |
17.73 |
BallCalled |
5.96 |
0.99 |
5.21 |
7.5 |
Four-Seam |
90.67 |
2186.06 |
223.27 |
14.79 |
17.01 |
StrikeSwinging |
6.01 |
0.91 |
4.89 |
7.4 |
Changeup |
82.10 |
1614.69 |
261.32 |
16.31 |
3.84 |
StrikeCalled |
5.90 |
0.97 |
5.02 |
8.7 |
Changeup |
82.25 |
1700.96 |
262.50 |
17.72 |
3.67 |
FoulBallNotFieldable |
5.86 |
1.04 |
4.95 |
8.8 |
Changeup |
80.89 |
1478.07 |
259.60 |
16.58 |
4.46 |
BallCalled |
5.92 |
0.95 |
4.90 |
8.7 |
Sinker |
90.92 |
2134.03 |
227.96 |
14.58 |
14.36 |
FoulBallNotFieldable |
5.95 |
0.94 |
5.08 |
7.6 |
Changeup |
83.09 |
1662.53 |
258.82 |
16.57 |
4.64 |
InPlay |
5.93 |
0.89 |
4.83 |
8.6 |
Changeup |
81.62 |
1559.16 |
277.83 |
20.35 |
-1.34 |
StrikeSwinging |
5.73 |
1.12 |
4.94 |
9.3 |
Changeup |
80.81 |
1515.27 |
277.32 |
17.13 |
-0.70 |
StrikeCalled |
5.77 |
1.18 |
4.85 |
9.2 |
Changeup |
81.60 |
1536.12 |
257.79 |
14.99 |
4.70 |
FoulBallNotFieldable |
5.92 |
0.99 |
4.85 |
8.6 |
Changeup |
82.15 |
1596.04 |
267.93 |
13.87 |
1.89 |
FoulBallNotFieldable |
5.65 |
1.17 |
4.85 |
8.9 |
Sinker |
90.37 |
2130.50 |
230.56 |
16.49 |
14.90 |
BallCalled |
5.82 |
1.10 |
4.90 |
7.7 |
Changeup |
82.10 |
1544.50 |
254.83 |
17.17 |
6.06 |
InPlay |
5.82 |
1.20 |
4.85 |
8.5 |
Sinker |
89.41 |
2153.81 |
221.79 |
14.51 |
17.59 |
BallCalled |
5.87 |
0.82 |
5.05 |
7.4 |
Changeup |
81.43 |
1515.91 |
256.56 |
15.39 |
5.08 |
BallCalled |
5.88 |
0.95 |
4.75 |
8.6 |
Four-Seam |
89.45 |
2111.41 |
210.59 |
11.08 |
20.05 |
StrikeCalled |
5.86 |
0.84 |
5.03 |
7.0 |
Four-Seam |
88.94 |
2111.77 |
206.11 |
9.77 |
21.22 |
BallCalled |
5.99 |
0.81 |
5.17 |
6.9 |
Sinker |
88.98 |
2153.38 |
220.51 |
16.32 |
20.45 |
StrikeCalled |
5.94 |
0.73 |
5.32 |
7.4 |
Four-Seam |
89.97 |
2186.28 |
208.71 |
10.97 |
21.36 |
StrikeSwinging |
5.97 |
0.80 |
5.07 |
7.0 |
Four-Seam |
89.24 |
2013.44 |
216.29 |
12.71 |
18.54 |
StrikeCalled |
5.87 |
0.98 |
4.95 |
7.2 |
Slider |
83.33 |
2028.63 |
207.95 |
4.22 |
9.23 |
BallCalled |
5.95 |
1.03 |
5.09 |
6.9 |
Four-Seam |
89.06 |
2135.67 |
207.27 |
9.86 |
20.36 |
BallCalled |
5.97 |
0.96 |
5.20 |
6.9 |
Four-Seam |
88.32 |
2104.25 |
211.06 |
11.90 |
21.02 |
InPlay |
6.02 |
0.87 |
5.12 |
7.0 |
Changeup |
80.77 |
1656.00 |
261.75 |
17.81 |
4.00 |
BallCalled |
5.84 |
1.21 |
5.03 |
8.7 |
Four-Seam |
91.27 |
2114.59 |
213.23 |
12.17 |
19.74 |
StrikeCalled |
5.89 |
1.00 |
5.13 |
7.1 |
Changeup |
82.62 |
1636.99 |
252.96 |
17.38 |
6.70 |
FoulBallNotFieldable |
5.75 |
1.17 |
4.89 |
8.4 |
Four-Seam |
91.44 |
2154.15 |
212.03 |
10.27 |
17.62 |
StrikeCalled |
5.81 |
0.99 |
5.22 |
7.1 |
Four-Seam |
89.51 |
1995.89 |
218.85 |
11.91 |
16.06 |
StrikeSwinging |
5.90 |
1.00 |
4.93 |
7.3 |
Changeup |
83.77 |
1441.69 |
262.11 |
16.49 |
3.63 |
StrikeCalled |
5.92 |
0.99 |
4.94 |
8.7 |
Four-Seam |
89.78 |
2085.32 |
211.35 |
10.72 |
18.86 |
StrikeSwinging |
5.96 |
1.00 |
4.95 |
7.0 |
Four-Seam |
88.31 |
2157.41 |
218.45 |
13.16 |
17.92 |
FoulBallNotFieldable |
5.98 |
0.87 |
5.10 |
7.3 |
Changeup |
82.23 |
1826.37 |
251.10 |
17.14 |
7.29 |
BallCalled |
5.92 |
1.05 |
4.83 |
8.4 |
Four-Seam |
90.20 |
2246.47 |
218.81 |
13.79 |
18.41 |
StrikeCalled |
5.95 |
0.89 |
4.65 |
7.3 |
Four-Seam |
91.18 |
2270.53 |
220.39 |
13.55 |
17.19 |
StrikeCalled |
5.84 |
0.99 |
4.73 |
7.3 |
Four-Seam |
89.51 |
2163.21 |
213.70 |
12.21 |
19.54 |
StrikeCalled |
6.05 |
0.81 |
4.89 |
7.1 |
Changeup |
82.40 |
1689.80 |
269.02 |
17.91 |
1.76 |
StrikeSwinging |
5.97 |
0.96 |
4.80 |
9.0 |
Sinker |
89.98 |
2217.31 |
225.06 |
15.88 |
17.08 |
FoulBallNotFieldable |
5.98 |
0.82 |
4.91 |
7.5 |
Changeup |
82.60 |
1613.56 |
242.98 |
12.45 |
7.68 |
BallCalled |
5.97 |
0.96 |
4.94 |
8.1 |
Four-Seam |
90.27 |
2156.58 |
221.72 |
14.69 |
17.67 |
InPlay |
5.93 |
0.95 |
4.90 |
7.4 |
Four-Seam |
89.82 |
2054.15 |
217.80 |
12.16 |
16.85 |
BallCalled |
5.95 |
0.79 |
4.91 |
7.3 |
Changeup |
81.03 |
1682.73 |
249.14 |
14.21 |
6.79 |
InPlay |
5.91 |
1.04 |
4.99 |
8.3 |
Changeup |
79.28 |
1554.28 |
241.70 |
12.97 |
8.44 |
BallCalled |
5.98 |
1.09 |
4.80 |
8.1 |
Sinker |
87.46 |
2007.92 |
222.50 |
14.05 |
16.57 |
StrikeCalled |
6.05 |
0.88 |
4.89 |
7.4 |
Four-Seam |
87.79 |
2101.65 |
214.33 |
12.16 |
19.00 |
BallCalled |
6.00 |
0.92 |
4.93 |
7.1 |
Changeup |
80.20 |
1776.00 |
240.08 |
16.78 |
11.11 |
FoulBallNotFieldable |
5.97 |
0.94 |
4.81 |
8.0 |
Slider |
81.94 |
1980.62 |
171.68 |
-1.05 |
8.65 |
FoulBallNotFieldable |
5.91 |
0.97 |
4.89 |
5.7 |
Changeup |
80.39 |
1560.98 |
261.53 |
14.39 |
3.59 |
HitByPitch |
5.97 |
1.00 |
4.85 |
8.7 |
Changeup |
79.76 |
1561.51 |
256.92 |
17.46 |
5.52 |
StrikeSwinging |
5.87 |
1.20 |
4.84 |
8.6 |
Changeup |
77.93 |
1531.34 |
244.49 |
13.54 |
7.97 |
BallCalled |
5.89 |
1.14 |
4.97 |
8.1 |
Sinker |
88.18 |
2116.14 |
221.83 |
15.03 |
18.04 |
FoulBallNotFieldable |
5.95 |
1.07 |
5.09 |
7.4 |
Four-Seam |
89.14 |
2167.79 |
214.91 |
12.15 |
18.74 |
InPlay |
5.95 |
0.98 |
4.84 |
7.2 |
Four-Seam |
89.37 |
2108.47 |
205.65 |
8.20 |
18.34 |
StrikeSwinging |
6.03 |
0.97 |
4.96 |
6.9 |
Changeup |
82.01 |
1629.87 |
255.79 |
17.59 |
5.91 |
StrikeCalled |
5.95 |
1.00 |
5.01 |
8.5 |
Four-Seam |
91.08 |
2281.39 |
211.76 |
12.39 |
21.27 |
BallCalled |
6.02 |
0.71 |
4.83 |
7.1 |
Changeup |
83.19 |
1872.55 |
232.86 |
14.39 |
12.35 |
BallCalled |
6.03 |
0.85 |
4.78 |
7.8 |
Four-Seam |
89.29 |
2165.73 |
219.97 |
15.56 |
19.87 |
FoulBallNotFieldable |
6.06 |
0.83 |
4.95 |
7.3 |
NA |
83.91 |
2111.02 |
NA |
NA |
NA |
InPlay |
6.21 |
1.08 |
4.90 |
NA |
# Calculate the total number of pitches
total_pitches <- nrow(detailed_pitch_table)
# Create a summary table
pitch_summary <- detailed_pitch_table %>%
group_by(AutoPitchType) %>%
summarise(
TotalPitches = n(),
Usage = sprintf("%.2f%%", n() / total_pitches * 100),
Balls = sum(PitchCall == "BallCalled"),
Strikes = sum(PitchCall != "BallCalled"), # Count everything not a ball as a strike
BallPercentage = sprintf('%.2f%%', Balls / TotalPitches * 100),
StrikePercentage = sprintf('%.2f%%', Strikes / TotalPitches * 100),
AvgVelocity = round(mean(ReleaseSpeed, na.rm = TRUE), 2),
AvgSpinRate = round(mean(SpinRate, na.rm = TRUE), 2),
AvgInducedVertBreak = round(mean(InducedVerticalBreak, na.rm = TRUE), 2),
AvgHorzBreak = round(mean(HorizontalBreak, na.rm = TRUE), 2),
AvgTilt = round(mean(Tilt, na.rm = TRUE), 2),
AvgClockTilt = round(mean(ClockTilt, na.rm = TRUE), 1), # Clock face interpretation
AvgReleaseHeight = round(mean(ReleaseHeight, na.rm = TRUE), 2),
AvgReleaseSide = round(mean(ReleaseSide, na.rm = TRUE), 2),
AvgExtension = round(mean(Extension, na.rm = TRUE), 2)
) %>%
select(AutoPitchType, Usage, everything())
# Display the total number of pitches
cat("Total number of pitches thrown: ", total_pitches, "\n")
## Total number of pitches thrown: 64
# Display the summary table
knitr::kable(pitch_summary, caption = "Summary Pitch Table for Ben Alekson")
Summary Pitch Table for Ben Alekson
Changeup |
40.62% |
26 |
8 |
18 |
30.77% |
69.23% |
81.51 |
1608.59 |
5.11 |
16.12 |
256.92 |
8.6 |
5.89 |
1.04 |
4.88 |
Four-Seam |
40.62% |
26 |
7 |
19 |
26.92% |
73.08% |
89.82 |
2139.37 |
18.85 |
12.47 |
215.26 |
7.2 |
5.96 |
0.91 |
4.97 |
Sinker |
14.06% |
9 |
3 |
6 |
33.33% |
66.67% |
89.40 |
2116.14 |
16.96 |
15.17 |
224.23 |
7.5 |
5.93 |
0.91 |
5.03 |
Slider |
3.12% |
2 |
1 |
1 |
50.00% |
50.00% |
82.63 |
2004.62 |
8.94 |
1.58 |
189.82 |
6.3 |
5.93 |
1.00 |
4.99 |
NA |
1.56% |
1 |
0 |
1 |
0.00% |
100.00% |
83.91 |
2111.02 |
NaN |
NaN |
NaN |
NaN |
6.21 |
1.08 |
4.90 |
# Calculate maximum fastball velocity
max_fb_velocity <- detailed_pitch_table %>%
filter(AutoPitchType %in% c("Four-Seam", "Two-Seam", "Sinker", "Cutter")) %>%
summarise(MaxFBVelocity = max(ReleaseSpeed, na.rm = TRUE)) %>%
pull(MaxFBVelocity)
# Display the maximum fastball velocity
cat("Ben Alekson maximum FB velocity: ", max_fb_velocity, "mph\n")
## Ben Alekson maximum FB velocity: 91.64 mph
# Prepare data for plotting pitch locations
pitch_location_data <- Ben_Alekson_data %>%
select(AutoPitchType, PlateLocHeight, PlateLocSide, PitchCall) %>%
rename(
PitchHeight = PlateLocHeight,
PitchSide = PlateLocSide
) %>%
mutate(
SwingTake = ifelse(PitchCall %in% c("StrikeSwinging", "FoulBallNonSwinging", "FoulBallFieldable", "FoulBallNotFieldable", "InPlay"), "Swing", "Take"),
Chase = ifelse(SwingTake == "Swing" & (PitchSide < -0.75 | PitchSide > 0.75 | PitchHeight < 1.5 | PitchHeight > 3.5), "Chase", "Non-Chase")
)
# Create the scatter plot with specified strike zone boxes
ggplot(pitch_location_data, aes(x = PitchSide, y = PitchHeight, color = SwingTake, shape = Chase)) +
geom_point(size = 3) +
geom_rect(aes(xmin = -0.5, xmax = 0.5, ymin = 1.75, ymax = 3.25), fill = NA, color = "red", linetype = "solid", size = 1) +
geom_rect(aes(xmin = -0.75, xmax = 0.75, ymin = 1.5, ymax = 3.5), fill = NA, color = "black", linetype = "solid", size = 1) +
geom_rect(aes(xmin = -1.25, xmax = 1.25, ymin = 1.25, ymax = 3.75), fill = NA, color = "gray", linetype = "solid", size = 1) +
scale_x_continuous(limits = c(-2, 2)) +
scale_y_continuous(limits = c(0, 5)) +
coord_fixed(ratio = 1) +
labs(title = "Pitch Locations for Ben Alekson",
x = "Horizontal Location (feet)",
y = "Vertical Location (feet)",
color = "Swing/Take",
shape = "Chase") +
facet_wrap(~ AutoPitchType) +
theme_minimal() +
theme(
legend.position = "right",
panel.grid.major = element_line(color = "grey80"),
panel.grid.minor = element_line(color = "grey90"),
axis.text = element_text(color = "black"),
axis.title = element_text(color = "black"),
plot.title = element_text(color = "black"),
legend.background = element_rect(fill = "white", color = NA),
legend.key = element_rect(fill = "white", color = NA),
legend.text = element_text(color = "black"),
legend.title = element_text(color = "black")
)

# Create the scatter plot for horizontal and vertical breaks
ggplot(detailed_pitch_table, aes(x = HorizontalBreak, y = InducedVerticalBreak, color = AutoPitchType)) +
geom_point(size = 3) + # Increase point size
scale_x_continuous(limits = c(-25, 25)) + # Set horizontal limits to +/- 25 inches
scale_y_continuous(limits = c(-25, 25)) + # Set vertical limits to +/- 25 inches
labs(title = paste("Pitch Movement for", unique(detailed_pitch_table$AutoPitchType)),
x = "Horizontal Break (inches)",
y = "Induced Vertical Break (inches)",
color = "Pitch Type") +
theme_minimal() +
theme(
legend.position = "right",
panel.grid.major = element_line(color = "grey80"),
panel.grid.minor = element_line(color = "grey90"),
axis.text = element_text(color = "black"),
axis.title = element_text(color = "black"),
plot.title = element_text(color = "black"),
legend.background = element_rect(fill = "white", color = NA),
legend.key = element_rect(fill = "white", color = NA),
legend.text = element_text(color = "black"),
legend.title = element_text(color = "black")
)
