Mertens +450

I think it's good value. Yes she played doubles match 16 hours ago. Yes she is 1-5 against rybakina but she is starting to get use to this. 

They played for over 2 hours at the cinci open and when rybakina doesn't over power you she gets pissed off and then the errors come. Plus mertens return game is great. 

Look she could get wiped but it's not like she is a bum. You are catching nearly 5x on a 5 time gs winner. 

420 to win 2310 mertens

That'll be tough.