Legalized online/mobile sports wagering began Friday morning in Massachusetts, about 40 days after legalized sports betting launched at three casinos in the state. In-person betting became available to the public on Jan. 31 at Plainridge Park Casino in Plainville, MGM Springfield and Encore Boston Harbor in Everett. Six companies launched online bets -- Barstool Sportsbook, DraftKings, FanDuel, BetMGM, WynnBet and Caesers Sportsbook. Many of those companies offered free promotional bets. Mobile sports betting became legal four days before the 68-team field for the 2023 NCAA Division I men's basketball tournament games tips off. Video below: Time running out on free promotional bets Massachusetts is late to the sports betting game. More than 30 other states already allow the industry after the U. S. Supreme Court in 2018 ruled that banning sports betting was unconstitutional. People must be 21 or older to bet. Which sports or events are included? The approved catalog of events approved for wagering in Massachusetts includes a lot more than the big games. The Massachusetts Gaming Commission voted to allow wagering for things like professional league drafts, the big game MVP awards, competitive eating contests, and competitive entertainment events like the Academy Awards. Beyond football, basketball, hockey and baseball, commissioners also approved wagering on an expansive list of other sports, including athletics, Australian rules football, badminton, biathlon, billiards, bowling, boxing, cricket, cycling, darts, disc, floorball, futsal, golf, handball, field hockey, lacrosse, mixed martial arts, racing, netball, pesapallo, rowing, rugby league, rugby union, sailing, snooker, soccer, softball, swimming, table tennis, tennis, volleyball, and water polo. Which sports or events are prohibited? High school and youth sports or athletic events are never permitted as subjects for wagering in Massachusetts. Additionally, bets will not be allowed on a collegiate sport or athletic event involving one or more teams from the state, unless they are involved in a tournament with four or more teams. Bets are not permitted for events where the final outcome is primarily based on the evaluation or assessment of a judge or panel of judges. That includes Summer and Winter Olympic events. Wagers on any sports or sporting event overseen by Russian or Belarusian governing bodies, leagues, events and players are not allowed. What kind of bets are allowed? The Massachusetts Gaming Commission has approved these types of wagers for all leagues: Single-game bets, teaser bets, parlays, over-under, moneyline, pools, exchange wagering, in-game wagering, in-play bets, proposition bets, straight bets, point spreads, pleasers, round robin, cash out, 3-way, spread/handicap, totals, player-game-team props, futures/outrights, yes/no, Win/Place/Each Way. Next occurrence wagers are also allowed for in-game wagers. What kind of bets are prohibited? Massachusetts will not allow wagering on an outcome dependent on the performance of an individual collegiate athlete, fantasy contests, injuries, penalties, player discipline or replay review. Are there house rules? Yes, each of the three casinos has a published house rules document available from the MGC. How much money will the state make? Estimates for annual tax revenue from sports wagering have ranged from $35 million to more than $60 million. What about gambling addiction? The Massachusetts Council on Gaming and Health, a nonprofit that operates centers at the state’s three casinos, employs “game sense advisers” who work with casino patrons to help them understand the odds of winning. They can also help people put their names on a voluntary self-exclusion list to block themselves from the casinos. “We anticipate there will be a lot of new people coming in,” Marlene Warner, CEO of the Massachusetts Council on Gaming and Health, told The Associated Press. Warner said one demographic the group is expecting to see are young men, which she said are also one of the hardest groups to reach with help for problem gambling. “That is also the primary audience for sports wagering,” she said. “Those folks are already gambling at sports, often at harmful levels. ” Massachusetts has a Problem Gambling Helpline which offers support to affected individuals and their loved ones. Individuals can call 1-800-327-5050 or visit https://gamblinghelplinema. org to speak with trained specialists. Services are available around-the-clock and in multiple languages. The state also has a voluntary self-exclusion program and GameSense information centers are located in each of the three casinos. .