Total points scored by both teams in the first quarter, first half, and full game. That said, the most popular way to bet Over/Unders in baseball involves total combined runs scored by both teams in a single game. The site's bet builder allows you to combine up to 30 markets and is available for football, tennis, rugby (league and union), cricket, Australian Rules football, American football, basketball, baseball and ice hockey. Totals and moneylines are the most popular baseball bets; since the scores are so low compared to football and basketball, baseball uses "run lines" instead of point spreads. The same rules apply for basketball, if you bet on Chicago you think they will beat Oklahoma by at least 2 points and if you like the the Thunder you expect them to lose by less than 2, betting sites reviews, top sports betting sites reviews or win the game outright.