A record nine Major League Baseball teams are going to have to pay the tax man come January. According to ESPN and the Associated Press, the league sent a memo to the teams late Friday, Dec. 20, outlining the bill, known as a “luxury tax.” The luxury tax, also known as the Competitive Balance Tax, is a tool used by the MLB in lieu of a salary cap on 40-man rosters to discourage runaway spending. The tax takes into account each player’s average annual value, as well as multipliers for teams that are repeat offenders. The threshold teams had to…