square's spreadsheet is right on point.
This question is provides a straightforward application of Bayesian inference where the availability of additional evidence is used to refine the prior probability distribution. I briefly explained the concept in
this post and provided a couple of examples and a spreadsheet.
All those interested should check the above post and peruse the spreadsheets. As always feel free to ask any questions.
I'll try to post another problem of Bayesian inference more obviously related to sports betting at a later date.