What a Tennis Moneyline Actually Tells You
Every tennis moneyline shows two numbers — one for the favorite and one for the underdog. A negative number like -180 means you risk $180 to profit $100 on the favorite. A positive number like +155 means a $100 stake returns $155 profit if the underdog wins. The gap between those two numbers is where the book's margin lives. Bigger mismatches —
think a top-ranked player against a qualifier — produce steeper negatives and flatter positives. Closer matchups compress the spread. Knowing how to read that gap quickly is where sharper tennis wagering starts.