http://tinyurl.com/bsbseha
The Rangers have reached an agreement with Elvis Andrus through at least
2018. An announcement is expected later this week after Andrus completes his
physical. The contract extension is for eight years but Andrus can be a free
agent after four years.
There is a vesting option for a ninth season.
8+1(vesting option)的合约
第四年打完后可跳脱成为自由球员
可以把这份延长合约想成是60M/4Y (?)