Sweatt played three games in the National Hockey League (NHL) in 2011, before retiring to work in the financial industry.

After winning the Pekka Rautakallio trophy as the SM-liiga's best defenseman and the Kanada-malja as league champions with TPS in 2010, he returned to North America, signing with the Vancouver Canucks.

[1] He joined the American Hockey League (AHL) immediately after completing his senior season with Colorado, signing an amateur tryout contract with the San Antonio Rampage on March 22, 2007.

Competing in his first full professional season, he recorded 15 goals and 33 points over 56 games, second in team scoring to Teemu Laine.

[5] Spending the 2008–09 season with EC Red Bull Salzburg in the Austrian Hockey League, Sweatt scored 36 points over 52 games, second among team defensemen to Mario Scalzo.

[6] In the off-season, he signed as a free agent to a one-year contract with Latvian club Dinamo Riga of the Kontinental Hockey League on July 13, 2009.

[7] He took a break from club play in November 2009, making his second appearance with the United States national select team for the Deutschland Cup.

[4] Returning to Dinamo, Sweatt was released from his KHL contract after a slow start to the 2009–10 season, recording 7 points in 37 games.

He scored his first NHL goal that night, a game-winner in the third period against goaltender Pekka Rinne; the Canucks won the game 2–1.

[15] The following shift, he blocked a shot from Predators defenseman Shea Weber with his foot; a post-game X-ray diagnosed him with severe bruising.

Sweatt is known as an offensive defenseman, possessing a good shot and a tendency to join plays deep in the opposing zone.

[13] While enrolled at the Colorado College, Sweatt maintained a grade point average (GPA) of at least 3.0 while majoring in mathematical economics, qualifying for the WCHA All-Academic Team as a sophomore, junior, and senior hockey player (freshmen are not eligible for the distinction).

[27] In his junior year, he was honored as a co-recipient of the Paul Markovich Award as the Colorado College Tigers' top student-athlete.