Carlisle: MLS postseason promises upsets among final eight

The MLS playoffs are an exercise in which lunacy often prevails. In the past five postseasons, the lower seeds have won their first-round series almost half the time. Top seeds have found the going especially rough, falling six out of ten times during this period. In fact, you have to go back to 2003, when Chicago and San Jose both triumphed, to find the last time that the No.