the seasons of each Warriors player after the team's championship run. Two hip surgeries limited Kevon Looney's rookie season in 2015-16 to five games. Last summer, while many NBA players relaxed, he trained twice a day five times a week. In games of 2-on-2, he flashed the traits that could make him a reliable "stretch 4." Expectations heightened for him when he posted several solid performances in the preseason. [...] after a strong start to the regular season, he was unproductive in limited minutes and his playing time dwindled. [...] as Looney prepares for his third NBA season, he still must prove that he belongs in the league. In October, the Warriors picked up the third-year option on Looney of $1.2 million to prevent him from becoming an unrestricted free agent this summer. Connor Letourneau is a San Francisco Chronicle staff writer. 2016-17 statistics: 2.5 points and 2.3 rebounds in 8.4 minutes per game