Cowsette was selected by the Washington Redskins in the seventh round of the 2000 NFL draft after playing college football for the Maryland Terrapins.
Cowsette was also a member of the Indianapolis Colts, Tampa Bay Buccaneers, New York Giants, and Chicago Bears of the NFL but did not appear in any games for any of those teams.
He played for the Cologne Centurions of NFL Europe in 2005, and the New York Dragons and Philadelphia Soul of the AFL from 2006 to 2007.
[2] He recorded 52 tackles, eight sacks and five forced fumbles his senior year, earning all-state and All-Midwest honors.
[4] He played in all 11 games, starting three, his freshman year in 1996, accumulating 40 tackles, two sacks, and one fumble recovery that he returned 54 yards for a touchdown.
[3][6] Cowsette was selected by the Washington Redskins in the seventh round, with the 216th overall pick, of the 2000 NFL draft.
[1] During the 2002 preseason, Cowsette was fined $10,000 for a hit on Pittsburgh Steelers quarterback Charlie Batch that caused a chin laceration.
He played in all 10 games, starting nine, for the Centurions during the 2005 NFL Europe season, posting 18 tackles, three sacks, and one pass breakup.
[1] In late September 2005, he was selected by the Utah Blaze of the Arena Football League (AFL) in the expansion draft.
[11] On November 1, 2005, Cowsette and Richard McCleskey were traded to the New York Dragons for Josh White.
[19][20][21] He rejoined the professional ranks in 2023 as the defensive line coach for the Saskatchewan Roughriders of the Canadian Football League.
[6] While at Maryland, Cowsette was a scholar-athlete in spring 1998 and was also a member of the school's student-athlete advisory council.
[3] He is a co-founder of the Premiere Intermediate Football League and the owner of In Between the Lines, a non-profit youth organization.