Ostrava Challenger page help: Odds Portal lists all upcoming Ostrava Challenger tennis matches played in Czech Republic. "B's" column indicates number of bookmakers offering Ostrava Challenger betting odds on a specific tennis match. Columns 1, X and 2 serve for average/biggest Ostrava Challenger betting odds offered on home team to win, draw and away team to win the Ostrava Challenger match. The top line of upcoming matches table (Tennis - Czech Republic - Ostrava Challenger) lets you click-through to higher categories of Odds Portal betting odds comparison service.