The Arizona Diamondbacks have extended the contracts of manager Kirk Gibson and general manager Kevin Towers. Team President Derrick Hall said after Monday's announcement that Gibson and Towers asked that the length of the deals be kept secret. ''It's between myself, Derrick, (managing general partner) Ken (Kendrick) and Gibby.'' Last October, the team declined to exercise options to extend both contracts, but Hall said he has felt all along that the Diamondbacks shouldn't go into the season with the two facing the last year of their deals. The Diamondbacks won 94 games in 2012 and took the NL West title before falling to Milwaukee in five games in the divisional playoffs. More...