Payout arithmetic
A hypothetical stake of 10 at 2.20 returns 22 on a winning selection, including the stake. The inverse price is about 45.45% before margin; it is not an independent probability model.
Different outcomes need different comparisons
A Test match can have a draw outcome. A limited-overs market may specify how ties and a super over are handled. Do not compare a two-outcome and a three-outcome quote as if the conditions matched.
Capture context
Record the score, innings, over, market and observation time when supplied. A pre-toss quote and an in-play quote describe different information states.
