Rookie SS Konnor Griffin gets 9-year contract extension from Pirates

(Photo credit: Charles LeClaire-Imagn Images)

The Pittsburgh Pirates said Wednesday they have agreed to a nine-year contract extension with shortstop Konnor Griffin, the top prospect in baseball.

The team did not announce the contract value, but ESPN pegged it at $140 million, making it the largest amount of guaranteed money in Pirates history and the most for any rookie.

The Pirates selected Griffin