Thomas Ulrich started in 1989 at the age of fourteen Spandau boxing club in 1926 with the boxes. Two months later, he earned his first amateur fight he could win early. First successes came in 1991 by winning the German Junior Championship. With this victory, he was qualified for the Junior World Championship in 1992 in Montreal, where he was runner-up.
After he again German junior champion in 1993, he entered first time in 1994 at the German Championships of seniors in Berlin and won the national championship in the light heavyweight division by one point victory over Sven Ottke. In 1995, he lost the final of the German Cup against Torsten Bengtson.
In 1995, Ulrich took part in the World Championships in Berlin and took a third place. He defeated Evgeny Makarenko this, Russia ( 19:9 ), Mohamed Benguesmia, Algeria (7:3), and Timur Ibragimov, Uzbekistan, before the semi-final against Dihosvany Vega, Cuba ( 11:8 ) lost. In the Military World Championship in the same year in Rome, he finished second, where he had to win the final of the Italian Pietro Aurino admit defeat ( 10:6 ).
1996 retired from Ulrich at the European Championships in Vejle in the quarterfinals and then took for Germany in the Olympic Games in Atlanta. There he failed after victories over Rick Timperi, Australia ( 21:7 ), Ismael Kone, Sweden ( 24:9 ), and Daniel Bispo, Brazil, only in the semi-final against Lee Seung- bae, South Korea ( 14:7 ), and could thereby securing a bronze medal.
In 1996 he signed a contract with Universum Box-Promotion and made his professional debut on 11 January 1997. 1999 he became German champion in the light heavyweight division. On 1 April 2000, he won the " Intercontinental" - title of the WBO. In his second title defense Ulrich suffered the first defeat of his professional career by a knockout in the sixth round in the fight against Glen Johnson. In 2002 he was European champion. Thomas Ulrich defeated on May 10, 2003 Graciano Rocchigiani in Stuttgart Schleyer -Halle. It was " Rocky's " last professional fight. After he had meanwhile resigned from the European title, he won it in 2004 by a knockout victory in the eleventh round against the Italian Silvio Branco again.
On 15 October 2005, he was given the opportunity against the Poles Tomasz Adamek for the WBC world championship fight, but failed due to an KOs in the sixth round. Already on July 29, 2006 Ulrich was against his stablemate, the Hungarian WBO titlist Zsolt Erdei a renewed world championship match, but also lost the second attempt at a world title. He defeated Erdei after twelve rounds convincingly on points.
In January 2007, Ulrich won by a premature victory over Rachid Kanfouah for the third time the European Championship light heavyweight. On 23 February 2008, he punched in a mandatory defense against Yuri Baraschian from Ukraine. After a total of four knockdowns by liver hook in the seventh round and round eight he was counted and lost the European title by knockout. On March 7, 2009, he fought against Mariano Nicolas Plotinsky from Argentina for the WBO Inter- Continental light heavyweight title and lost the battle, surprisingly, by knockout in the eleventh round. His active professional career ended Ulrich initially in July 2009. In October 2010, he rose again in Hamburg in the ring and won the super middleweight against the Hungarian Gyula Gaspar. One for the planned January 14, 2012 against Dustin Dirks in the Offenburg Baden- Arena fight, he said, four days earlier for unknown reasons. The fight was rescheduled on May 5, 2012 in Erfurt; Ulrich lost by knockout in the fourth round, after he had received a blow to the liver.