[USER (data scientist)]: Nice, now I'd like to set up an empty list where I can store each player's performance data for every round. Please initialize and display an empty list for storing tennis performance data.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd
import numpy as np
import pickle
from decision_company import read_csv_file,

# please import the necessary private functions from decision_company first

atp_tennis = read_csv_file('atp_tennis.csv')

# YOUR SOLUTION BEGIN:
<code1>
[COMPLETE YOUR CODE] 
</code1>
# YOUR SOLUTION END

print(performance_data_list)

# save data
pickle.dump(performance_data_list,open("./pred_result/performance_data_list.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: No problem, here's how you can create an empty list:
'''
import pandas as pd
import numpy as np
import pickle
from decision_company import read_csv_file,

# please import the necessary private functions from decision_company first

atp_tennis = read_csv_file('atp_tennis.csv')

# YOUR SOLUTION BEGIN:
