If you’re one of those Celtics’ fans who like to put your money where your mouth is, then after the first half of Sunday’s Game 1 with the Pacers, you had to be wishing you had just invested your time in watching the game, as opposed to your money – assuming you laid the 7 ½ points with the Celtics. Some of the best online sportsbooks like YouWager gave Boston backers a slightly better deal at -7 but, nevertheless, when your team is down by seven after two quarters and you’re betting they win by seven, then you’re definitely sweating the game.