Choose the right scope
Read the event, player names and period first. Match winner is different from first-set winner; a player can lose the opening set and still win the match. Games handicaps and games totals concern a defined counting method rather than the winner alone. Check whether the competition uses a deciding match tie-break.
Retirements need the actual rules
An injury retirement is not the same as a completed match. Settlement can depend on the market and the sportsbook rules, so avoid assuming that every selection wins, loses or is voided in the same way. Walkovers, withdrawals before play and retirements during a match are separate situations.
Keep the line and format visible
When comparing totals, look at the stated number and match format together. For in-play betting, verify the selection and accepted terms after submitting the slip. Score displays can lag behind official records or later corrections. Use the event and bet identifiers to check a disputed result, with the market rules attached to that wager.