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
Valley628 <- read_excel("C:\\Users\\Franco Castagliuolo\\OneDrive - Bentley University\\Neers 24\\Pitchers\\Valley 628\\Valley 628.xlsx")
# Filter the data for the pitcher Nate Isler
Nate_Isler_data <- Valley628 %>%
filter(Pitcher == "Isler, Nate")
# Create a detailed table for each pitch
detailed_pitch_table <- Nate_Isler_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 Nate Isler")
Detailed Pitch Table for Nate Isler
Four-Seam |
88.31 |
2105.82 |
176.58 |
-1.29 |
22.77 |
BallCalled |
6.51 |
0.68 |
6.19 |
5.9 |
Four-Seam |
86.90 |
2091.34 |
211.20 |
10.94 |
19.28 |
BallCalled |
6.49 |
0.66 |
5.95 |
7.0 |
Four-Seam |
87.06 |
2171.59 |
218.80 |
14.46 |
19.18 |
BallCalled |
6.32 |
1.04 |
5.88 |
7.3 |
Four-Seam |
85.09 |
2045.54 |
214.66 |
12.73 |
19.71 |
BallCalled |
6.45 |
0.88 |
5.97 |
7.2 |
Four-Seam |
86.33 |
2135.52 |
211.48 |
9.95 |
17.41 |
BallCalled |
6.45 |
1.08 |
6.01 |
7.0 |
Changeup |
86.63 |
2019.15 |
214.83 |
11.26 |
17.37 |
InPlay |
6.51 |
1.12 |
5.84 |
7.2 |
Curveball |
71.83 |
2209.30 |
38.67 |
-13.21 |
-14.72 |
BallCalled |
6.24 |
1.21 |
5.66 |
1.3 |
Curveball |
72.34 |
2338.11 |
39.79 |
-13.01 |
-13.81 |
BallCalled |
6.27 |
1.31 |
5.40 |
1.3 |
Four-Seam |
86.00 |
2202.30 |
208.63 |
10.04 |
19.59 |
BallCalled |
6.43 |
1.18 |
6.09 |
7.0 |
Four-Seam |
85.46 |
2144.52 |
220.96 |
14.53 |
18.11 |
StrikeCalled |
6.32 |
1.32 |
6.07 |
7.4 |
Four-Seam |
85.15 |
2142.93 |
219.09 |
14.14 |
18.71 |
InPlay |
6.41 |
1.28 |
5.92 |
7.3 |
Four-Seam |
85.72 |
2061.39 |
198.32 |
7.19 |
23.07 |
InPlay |
6.37 |
0.80 |
6.02 |
6.6 |
Four-Seam |
86.17 |
2232.94 |
203.98 |
10.22 |
24.40 |
StrikeCalled |
6.41 |
1.42 |
5.91 |
6.8 |
Four-Seam |
86.44 |
2247.11 |
207.06 |
11.08 |
23.13 |
FoulBallNotFieldable |
6.44 |
1.45 |
5.81 |
6.9 |
Four-Seam |
87.96 |
2191.02 |
196.59 |
6.93 |
24.59 |
BallCalled |
6.60 |
1.00 |
5.85 |
6.6 |
Curveball |
73.90 |
2286.21 |
39.73 |
-10.62 |
-11.06 |
InPlay |
6.32 |
1.39 |
5.40 |
1.3 |
Four-Seam |
86.28 |
2082.66 |
206.95 |
10.98 |
22.95 |
FoulBallNotFieldable |
6.47 |
1.23 |
5.84 |
6.9 |
Four-Seam |
87.56 |
2181.49 |
209.69 |
11.15 |
21.05 |
BallCalled |
6.51 |
1.21 |
5.83 |
7.0 |
Curveball |
71.16 |
2269.90 |
22.79 |
-8.44 |
-17.98 |
StrikeSwinging |
6.25 |
1.37 |
5.70 |
0.8 |
Four-Seam |
87.87 |
2193.61 |
203.53 |
7.68 |
19.13 |
StrikeCalled |
6.50 |
1.05 |
5.92 |
6.8 |
Four-Seam |
86.28 |
2086.59 |
194.88 |
5.80 |
23.40 |
StrikeCalled |
6.26 |
1.46 |
5.86 |
6.5 |
Splitter |
76.08 |
786.53 |
263.08 |
7.49 |
2.69 |
BallCalled |
6.02 |
1.98 |
5.53 |
8.8 |
Four-Seam |
86.86 |
2176.92 |
203.35 |
8.36 |
20.83 |
StrikeSwinging |
6.39 |
1.52 |
5.90 |
6.8 |
Four-Seam |
88.96 |
2216.00 |
200.05 |
7.07 |
20.78 |
BallCalled |
6.39 |
1.08 |
6.02 |
6.7 |
Four-Seam |
86.66 |
2100.94 |
209.06 |
9.65 |
18.83 |
BallCalled |
6.46 |
1.49 |
5.84 |
7.0 |
Four-Seam |
86.01 |
2082.59 |
203.18 |
7.81 |
19.68 |
BallCalled |
6.38 |
1.32 |
5.95 |
6.8 |
Four-Seam |
87.88 |
2115.58 |
200.65 |
6.87 |
19.69 |
BallCalled |
6.44 |
1.14 |
5.98 |
6.7 |
Four-Seam |
87.01 |
2148.02 |
192.94 |
4.99 |
23.14 |
StrikeSwinging |
6.39 |
1.46 |
5.89 |
6.4 |
Four-Seam |
87.15 |
2153.96 |
206.15 |
8.79 |
19.34 |
BallCalled |
6.46 |
1.24 |
5.98 |
6.9 |
Four-Seam |
86.42 |
2118.21 |
189.98 |
4.08 |
24.64 |
BallCalled |
6.40 |
1.13 |
6.04 |
6.3 |
Four-Seam |
85.92 |
2046.14 |
185.58 |
2.19 |
23.89 |
StrikeSwinging |
6.31 |
1.07 |
6.08 |
6.2 |
Cutter |
85.07 |
1934.14 |
174.33 |
-2.00 |
21.68 |
FoulBallNotFieldable |
6.49 |
0.85 |
6.06 |
5.8 |
Four-Seam |
85.26 |
2002.32 |
201.48 |
8.04 |
21.82 |
FoulBallNotFieldable |
6.42 |
0.95 |
6.04 |
6.7 |
Four-Seam |
85.73 |
2091.78 |
205.24 |
8.67 |
19.70 |
BallCalled |
6.40 |
0.83 |
5.99 |
6.8 |
Four-Seam |
85.55 |
2011.02 |
185.53 |
2.48 |
27.01 |
FoulBallNotFieldable |
6.33 |
0.69 |
6.12 |
6.2 |
Four-Seam |
88.43 |
2141.98 |
196.23 |
6.50 |
23.76 |
StrikeSwinging |
6.45 |
0.59 |
6.01 |
6.5 |
Four-Seam |
88.80 |
2246.52 |
191.93 |
4.96 |
24.86 |
InPlay |
6.47 |
0.57 |
6.17 |
6.4 |
# 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: 37
# Display the summary table
knitr::kable(pitch_summary, caption = "Summary Pitch Table for Nate Isler")
Summary Pitch Table for Nate Isler
Changeup |
2.70% |
1 |
0 |
1 |
0.00% |
100.00% |
86.63 |
2019.15 |
17.37 |
11.26 |
214.83 |
7.2 |
6.51 |
1.12 |
5.84 |
Curveball |
10.81% |
4 |
2 |
2 |
50.00% |
50.00% |
72.31 |
2275.88 |
-14.39 |
-11.32 |
35.24 |
1.2 |
6.27 |
1.32 |
5.54 |
Cutter |
2.70% |
1 |
0 |
1 |
0.00% |
100.00% |
85.07 |
1934.14 |
21.68 |
-2.00 |
174.33 |
5.8 |
6.49 |
0.85 |
6.06 |
Four-Seam |
81.08% |
30 |
15 |
15 |
50.00% |
50.00% |
86.71 |
2132.28 |
21.48 |
8.23 |
202.46 |
6.8 |
6.42 |
1.09 |
5.97 |
Splitter |
2.70% |
1 |
1 |
0 |
100.00% |
0.00% |
76.08 |
786.53 |
2.69 |
7.49 |
263.08 |
8.8 |
6.02 |
1.98 |
5.53 |
# 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("Nate Isler maximum FB velocity: ", max_fb_velocity, "mph\n")
## Nate Isler maximum FB velocity: 88.96 mph
# Prepare data for plotting pitch locations
pitch_location_data <- Nate_Isler_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) + # Increase point size
geom_rect(aes(xmin = -0.5, xmax = 0.5, ymin = 1.75, ymax = 3.25), fill = NA, color = "red", linetype = "solid", size = 1) + # Red box
geom_rect(aes(xmin = -0.75, xmax = 0.75, ymin = 1.5, ymax = 3.5), fill = NA, color = "black", linetype = "solid", size = 1) + # Black box
geom_rect(aes(xmin = -1.25, xmax = 1.25, ymin = 1.25, ymax = 3.75), fill = NA, color = "gray", linetype = "solid", size = 1) + # Gray box
scale_x_continuous(limits = c(-2, 2)) +
scale_y_continuous(limits = c(0, 5)) +
coord_fixed(ratio = 1) + # Adjust ratio to shrink vertical distance
labs(title = "Pitch Locations for Nate Isler",
x = "Horizontal Location (feet)",
y = "Vertical Location (feet)",
color = "Swing/Take",
shape = "Chase") +
facet_wrap(~ AutoPitchType) + # Create individual graphs for each 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")
)

# 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
labs(title = "Pitch Movement for Nate Isler",
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")
)
