PHOENIX — The party was wet and raucous.
For the first time in six years and just two seasons after losing 110 games, the Arizona Diamondbacks had clinched a playoff spot, sealing up a National League wild card on the season’s penultimate day. Clad in neon ski goggles and champagne-soaked black shirts, the celebrants filled Chase Field’s signature pool in right-center. A spontaneous roll call began, summoning coaches and executives into the water, and one by one they took the plunge. Yet Mike Hazen, the team’s general manager and the architect of this surprisingly competitive club, remained planted among onlookers on the outfield turf.