The 2003–04 Dallas Mavericks season was the Mavericks' 24th season in the National Basketball Association. During the offseason, the Mavericks acquired Antawn Jamison from the Golden State Warriors, and All-Star forward Antoine Walker from the Boston Celtics. Although the team struggled with chemistry with a 15–12 start, the Mavericks went on a nine-game winning streak in January, and won eight of their final ten games. They finished third in the Midwest Division with a 52–30 record. Dirk Nowitzki was the only member of the team to be selected for the 2004 NBA All-Star Game. With the trio of Nowitzki, Michael Finley and Steve Nash along with NBA Sixth Man of the Year Jamison, the Mavericks continued their reputation as the best offensive team in the NBA. Notable were two rookies, Josh Howard and Marquis Daniels, who made an immediate impact, and were both selected to the All-Rookie Second Team.