# Filter the data for the pitcher Helwig
Helwig_data <- Sanford64 %>%
filter(Pitcher == "Helwig, Dennis")
# Create a detailed table for each pitch
detailed_pitch_table <- Helwig_data %>%
select(AutoPitchType, RelSpeed, SpinRate, SpinAxis, HorzBreak, InducedVertBreak, PitchCall) %>%
rename(
ReleaseSpeed = RelSpeed,
Tilt = SpinAxis,
HorizontalBreak = HorzBreak,
InducedVerticalBreak = InducedVertBreak
) %>%
mutate(
ReleaseSpeed = round(ReleaseSpeed, 2),
SpinRate = round(SpinRate, 2),
Tilt = round(Tilt, 2),
HorizontalBreak = round(HorizontalBreak, 2),
InducedVerticalBreak = round(InducedVerticalBreak, 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 Helwig")
Detailed Pitch Table for Helwig
Four-Seam |
92.65 |
2135.03 |
222.61 |
15.10 |
17.55 |
BallCalled |
7.4 |
Four-Seam |
92.67 |
2232.40 |
224.43 |
14.56 |
15.98 |
StrikeCalled |
7.5 |
Slider |
80.15 |
2429.50 |
77.63 |
-14.52 |
-1.74 |
BallCalled |
2.6 |
Four-Seam |
92.08 |
2338.58 |
215.69 |
13.66 |
20.19 |
FoulBallNotFieldable |
7.2 |
Slider |
82.40 |
2552.32 |
58.08 |
-6.24 |
-2.45 |
BallCalled |
1.9 |
Curveball |
78.80 |
2383.12 |
48.40 |
-5.61 |
-3.46 |
FoulBallNotFieldable |
1.6 |
Four-Seam |
93.06 |
2305.72 |
210.02 |
11.53 |
21.02 |
StrikeSwinging |
7.0 |
Four-Seam |
91.81 |
2315.66 |
214.33 |
14.18 |
21.88 |
BallCalled |
7.1 |
Four-Seam |
91.42 |
2274.59 |
212.84 |
12.58 |
20.61 |
InPlay |
7.1 |
Four-Seam |
92.90 |
2198.59 |
208.49 |
10.69 |
20.77 |
BallCalled |
6.9 |
Changeup |
85.97 |
1326.23 |
255.17 |
16.15 |
5.44 |
StrikeCalled |
8.5 |
Changeup |
85.12 |
1386.62 |
254.48 |
15.61 |
5.51 |
BallCalled |
8.5 |
Four-Seam |
94.34 |
2301.57 |
210.82 |
10.68 |
18.96 |
InPlay |
7.0 |
Four-Seam |
90.86 |
2255.29 |
208.02 |
11.38 |
22.49 |
InPlay |
6.9 |
Four-Seam |
92.03 |
2267.24 |
208.78 |
11.35 |
21.74 |
BallCalled |
7.0 |
Slider |
81.83 |
1176.23 |
49.74 |
-5.38 |
-3.25 |
BallCalled |
1.7 |
Four-Seam |
91.01 |
2223.01 |
210.17 |
11.48 |
20.82 |
StrikeCalled |
7.0 |
Slider |
82.05 |
2365.83 |
67.99 |
-4.23 |
-0.37 |
StrikeCalled |
2.3 |
Slider |
79.52 |
2442.69 |
62.30 |
-4.64 |
-1.12 |
FoulBallNotFieldable |
2.1 |
Four-Seam |
92.36 |
2308.48 |
210.47 |
10.74 |
19.46 |
InPlay |
7.0 |
# Create a summary table
pitch_summary <- detailed_pitch_table %>%
group_by(AutoPitchType) %>%
summarise(
TotalPitches = n(),
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
)
# Display the summary table
knitr::kable(pitch_summary, caption = "Summary Pitch Table for Helwig")
Summary Pitch Table for Helwig
Changeup |
2 |
1 |
1 |
50.00% |
50.00% |
85.54 |
1356.42 |
5.47 |
15.88 |
254.82 |
8.5 |
Curveball |
1 |
0 |
1 |
0.00% |
100.00% |
78.80 |
2383.12 |
-3.46 |
-5.61 |
48.40 |
1.6 |
Four-Seam |
12 |
4 |
8 |
33.33% |
66.67% |
92.27 |
2263.01 |
20.12 |
12.33 |
213.06 |
7.1 |
Slider |
5 |
3 |
2 |
60.00% |
40.00% |
81.19 |
2193.31 |
-1.79 |
-7.00 |
63.15 |
2.1 |
# Prepare data for plotting pitch locations
pitch_location_data <- Helwig_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)) +
labs(title = "Pitch Locations for Helwig",
x = "Horizontal Location (feet)",
y = "Vertical Location (feet)",
color = "Swing/Take",
shape = "Chase") +
facet_wrap(~ AutoPitchType) + # Create individual graphs for each pitch type
geom_text(aes(x = -1.75, y = 5, label = "RHH"), color = "black", size = 3, hjust = 0) + # Label for RHH
geom_text(aes(x = 1.75, y = 5, label = "LHH"), color = "black", size = 3, hjust = 1) + # Label for LHH
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 Helwig",
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")
)
