Note that the term limits apply to the future years of a contract extension. Term limits apply for years after the current year. The three-year limit applies to future years!
My bad on the end dates for Gurierrez, Arenado and Martinez. They should be as follows:
OF Scott, Luke, $2m (2016) - 3 years after 2013
OF Gutierrez, Franklin, $1.5m (2016) - 3 years after 2013
CI Arenado, Nolan, $0.5m (2015) - no change (2 years after 2013)
P Martinez (Matias), Carlos, $0.5m (2015) - no change (2 years after 2013)
Arenado and Martinez were already extended to the limit.