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