Answer by taking a quote from the following article:

Urlacher was born to Bradley and Lavoyda Urlacher in Pasco, Washington, and his parents raised him with his younger brother Casey. After his parents separated, Lavoyda raised Urlacher and his siblings in Lovington, New Mexico. He spent his youth immersed in sports, and developed an interest in football, basketball, track and later table tennis; he graduated from Lovington High School in 1996. While his mother worked several jobs to keep her family afloat, Urlacher spent his teenage years playing sports for Lovington High School and training in weight rooms.

He signed a five-year contract, which was worth nearly eight million dollars with a five and a half million dollar signing bonus, within two months of the draft. Dick Jauron, who was then the Bears' head coach, recognized Urlacher's versatility as a middle and outside linebacker, and appointed him as the team's starting strongside linebacker. However, Urlacher struggled to perform consistently in his first professional game, and lost his starting position to Rosevelt Colvin. Jauron left Urlacher on the sidelines during the following week, as the Tampa Bay Buccaneers shut out the Bears, 41-0.  He managed to regain a starting spot on the Bears' roster, after Barry Minter, the team's veteran middle linebacker, was forced to miss the Week 3 game on account of an injury. Urlacher excelled at the middle linebacker position, and recorded 46 tackles, six sacks, and one interception in his next five starts. Not even a rib cage injury hindered his performance during this period, as Urlacher went on to win the league's Rookie Defensive Player of the Month in October. He led the Bears with 124 tackles and eight sacks, both of which surpassed the franchise's previous rookie records. Although the Bears finished with a disappointing 5-11 record, Urlacher received a number of individual accolades for his performance during the season. Many news organizations, such as the Associated Press and The Sporting News named him as the 2000 Defensive Rookie of the Year. Football fans across the nation also voted Urlacher to play at the 2001 Pro Bowl as an alternate middle linebacker. Urlacher's successful rookie campaign served as the foundation for his professional career and reputation.  Urlacher further distinguished himself as one of the Bears' most productive playmakers during the 2001 season. He had one of the best games of his career on October 7, against the Atlanta Falcons. Urlacher held Falcons quarterback Michael Vick, who was well known for his scrambling abilities, to 18 rushing yards, and recorded a forced fumble and sack. He also returned one of Vick's fumbles for a 90-yard touchdown. Two weeks later, Urlacher helped set up a Bears comeback victory against the San Francisco 49ers by intercepting a pass, and later setting up a game-winning touchdown return for Mike Brown, after causing 49ers wide receiver Terrell Owens to lose control of a pass. He also caught a touchdown pass from punter Brad Maynard off a fake field goal attempt against the Washington Redskins in Week 14, which clinched a first-round bye. Urlacher concluded the season with three interceptions, six sacks, and was a candidate for 2001 NFL Defensive Player of the Year Award. Football Digest named Urlacher their publication's defensive player of the year. The 2001 Chicago Bears won 13 games, marking the team's best finish since 1986, but lost to the Philadelphia Eagles in the NFC Divisional Playoffs.  Unfortunately, the Bears' 2001 winning season would be followed by three years of mediocrity. Before the 2004 NFL season, the Bears' organization fired coach Dick Jauron and then hired Lovie Smith. After starting the season on the lower rungs of the NFC North, Urlacher suffered several injuries that sidelined him for a majority of the season.

Was he successful his first year on the team?
Urlacher struggled to perform consistently in his first professional game, and lost his starting position