A midfielder, Borowski spent 11 years of his 12-year professional career with Werder Bremen, amassing Bundesliga totals of 236 games and 32 goals[2] and winning three major titles, including the 2004 national championship.

Borowski contributed with 25 games and one goal (against FC Schalke 04 in a 4–1 home win) in 2003–04 as the Hanseatic won their fourth national championship, the first in 11 years.

After featuring in only 13 league matches in his last two years combined he was released by his main club,[7] and retired from football shortly after due to injury, aged 32.

[12] He was selected by manager Jürgen Klinsmann for the 2006 FIFA World Cup on home soil, filling in for captain Michael Ballack in the opener against Costa Rica (4–2 triumph).

Borowski then proceeded to collect a further four substitute appearances: in the quarter-final against Argentina he made a superb assist for Bremen teammate Miroslav Klose to score the equalizing goal for Germany, and also converted his penalty shootout attempt as it ended 4–2 for the hosts.