Some of the worst baseball contracts are those that excessively overpay a player who has not yet demonstrated that he is worth the excessive salary. Often a new player may perform very well initially, building buzz and excitement around him, which can often lead to extravagant offers that the player may not ultimately live up to. A baseball team is then stuck with a very expensive and very average player who is taking up a large part of their financial resources. The worst baseball contracts also often leave teams stuck paying for players that they no longer want. Contracts worth incredibly large sums of money which also include clauses against trading the player may make a team vulnerable, as they may have to pay a player who under-performs. Giving long term high dollar contracts to older players whose best years may be behind them is also generally regarded as a bad move. Players are more susceptible to injury as they get older, and teams run a greater risk of having to pay out to a injured player when they secure long term contracts for older players. In some cases, general managers may be fired for particularly disastrous deals.