After a disastrous first game (in which he allowed 4 runs on 5 hits and 6 walks in 3⅔ innings), he pitched very well, posting a combined 2.41 ERA over his subsequent six starts, three times pitching six or more innings and allowing two or fewer hits, but, mostly due to lack of run support, no wins.

After the game, however, he complained of elbow soreness, was put on the 15-day DL, and ended up missing a month, returning on June 26 (throwing four innings, four hits, one run against the Braves).

During the 2007-2008 off-season, Bergmann pitched for Tigres del Licey in the Dominican Winter Baseball League.

Bergmann suffered a disappointing season with a 2–11 record and 5.09 ERA due in part to the extremely poor Nationals lineup.

Bergmann was then brought back to the majors and experienced some immediate success including 19 2/3 straight scoreless innings on the mound.

On December 3, 2010, Bergmann signed a minor league contract with the Boston Red Sox,[6] but the deal was voided on March 12, 2011, after he showed up to Spring Training with a shoulder issue.

[7] He was signed to a minor league contract by the Oakland Athletics on June 1, and assigned to the Double-A Midland RockHounds.

On February 17, 2013, Bergmann signed with the Sugar Land Skeeters of the Atlantic League of Professional Baseball.