 After being the team's top scoring option off the bench in 2014–15, he gained the nickname "Mo Buckets".On June 29, 2015, the Warriors exercised his team option for the 2015–16 season.During the 2015–16 season, Speights helped the Warriors record a 24–0 start to the season (an NBA record) and helped them finish 73–9, the best overall record in NBA history, surpassing the 1995–96 Chicago Bulls' mark of 72–10.