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