[USER (data scientist)]: Thank you. Now, I need to know the potential impact of the updated odds on the later rounds of the tournament, specifically the quarterfinals, semifinals, and finals. Please provide a dataframe with Round, Original Odds, Updated Odds, and Potential Impact Metrics (Changes in Match Favorites, Shifts in Tournament Dynamics).
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd
import numpy as np
import pickle

atp_tennis = pd.read_csv('atp_tennis.csv')

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

print(impact_df)

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

---END CODE TEMPLATE---

[YOU (AI assistant)]: To analyze the potential impact of the updated odds on the later rounds of the tournament (quarterfinals, semifinals, and finals), and provide a dataframe with Round, Original Odds, Updated Odds, and Potential Impact Metrics, you can use the following code:
'''
import pandas as pd
import numpy as np
import pickle

atp_tennis = pd.read_csv('atp_tennis.csv')

# YOUR SOLUTION BEGIN:
