[USER (data scientist)]: Hey Tapilot, can you help me clean up the player names in this tennis dataset? There are some extra spaces that need to be removed. Please generate the code with the output in list type.
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, check_elements_in_list, assert_series, logical_and, logical_or, count_unique_values, fill_missing_values, create_dataframe, reset_index

atp_tennis = read_csv_file('atp_tennis.csv')

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

print(top_10_player_names)

# save data
pickle.dump(top_10_player_names,open("./pred_result/top_10_player_names.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: Of course! :

# MY SOLUTION BEGIN:
