If the market for tickets to the World Series is in equilibrium but owners of tickets who would have sold their tickets are not allowed to sell,while fans who would not sell their tickets are required to sell,total surplus would decrease.

When owners of tickets are not allowed to sell their tickets, it decreases the supply of tickets in the market, causing an increase in the equilibrium price. On the other hand, when fans who would not sell their tickets are required to sell, it increases the supply of tickets in the market, causing a decrease in the equilibrium price. This will lead to a decreased total surplus as the quantity of tickets being exchanged will be lower than in the original equilibrium.