Steve Kerr attributes the Golden State Warriors’ early-season troubles to their starting lineup. The Warriors started 10-11 and were eliminated from the NBA’s in-season tournament during group play. Kerr told ESPN’s Kendra Andrews that the Warriors’ slow start may be due to a lack of a veteran starting lineup.

“The puzzle didn’t fit this year,” Kerr remarked. “We’ve got a lot of good players, but we may have to change the starting lineup depending on the opponent. I’d like something concrete, but we haven’t established anything this year. We’re 25% through, so this needs careful consideration.” The Warriors have used nine starting lineups in their first 21 games, second only to the Miami Heat. The changes are due to injury and suspensions. Draymond Green was suspended for five games and Andrew Wiggins missed two with right finger discomfort. Green, Wiggins, Curry, Thompson, and Looney have been the regular lineup.

Golden State has the worst plus-minus of any Warriors lineup this season, outscored by 25 points. Curry, Thompson, Wiggins, Looney, and Chris Paul have been the Warriors’ strongest lineup this season. The team has outscored opponents by 30 points in 85 minutes. The Warriors have won four and lost four of their previous eight games. Golden State defeated the Portland Trail Blazers 110-106 on Wednesday and will play the Oklahoma City Thunder at 8 p.m. ET on Friday.