Sure thing.
Since Rizzi has taken over ST coordinator we have been top 10 in average yards returned per punt including multiple top 5. We have simultaneously allowed some of the least return yards on punts during that time.
We haven't allowed a single punt return for a TD his entire Saints tenure.
We haven't had a single punt blocked during his tenure while being top 5 in blocked punts.
He's responsible for finding Grupe and Shaheed.
He is undoubtedly one of the best ST coaches in the NFL period.
Your turn to explain why he's overrated.