Biedriņš was drafted as the 11th pick in the first round by the Golden State Warriors. In his rookie season (2004–05), Biedriņš got little playing time, and often quickly got into foul trouble (3.6 points, 3.9 rebounds, 0.8 blocks and 2.9 fouls in 12.8 minutes, total 30 games). He also was the youngest player in the league during his rookie year as he was 18 years old at the time. In his second year, the 2005–06 season, Biedriņš played in 68 games, posting 3.8 points and 4.2 rebounds, with 14.1 minutes per game. However, he failed to improve much, and was ridiculed for his poor free throw percentage (.306) and his inability to stay out of foul trouble, committing 190 fouls in exactly 1,000 minutes of playing time. The Golden State fan base was not kind to the sophomore; he was called "The One Minute Man" by the Golden State Warriors blog for his alleged inability to play without a foul for longer than these 60 seconds. Biedriņš made some news when he was involved in a car accident on his way to a home game on the 880 freeway in Oakland. His Porsche Cayenne Turbo was totalled in the accident, and he missed that night's game and the next game due to back spasms.