Schweigert played quarterback and safety for Saginaw Heritage High School in Saginaw, Michigan. As a senior, he was ranked as the No. 9 defensive back and No. 78 player overall in the nation by Prep Football Report. He was ranked as the No. 18 best skill athlete by SuperPrep and a four-star recruit by Rivals.com. He amassed 1,502 rushing yards with 22 touchdowns as an option quarterback, threw for 500 yards with four touchdowns, and recorded 50 tackles with three interceptions and seven pass breakups on defense as senior. He was timed in 4.4 seconds in the 40-yard dash, and won the Michigan state champion in the 100 meters with a time of 10.45 defeating Charles Rogers. He placed third in the 200 meters in 21.6.
College career
While at Purdue, Schweigert started his entire career; winning a Big Ten Championship his freshman year. He played in 4 bowl games; the 2001 Rose Bowl, the 2001 and 2002 Sun Bowls and the 2003 Capital One Bowl. He collected 17 career interceptions, besting the previous school career record mark of 11 set by Rod Woodson, who also played for the Oakland Raiders. He was selected as the Big Ten Freshman of the Year following the 2000 season, was voted 1st Team All-Big Ten twice and 2nd Team All-Big Ten twice. Entering his Senior season, he was tabbed as a PlayboyAll-American, he was also selected to be the All-Big Ten Academic 1st Team. He finished 9th all-time in total tackles and 11th in solo tackles. In his final game at Ross–Ade Stadium he had two interceptions, including a game-clinching pick in a 27–14 victory over Iowa. Following the 2003 Capital One Bowl, he played in the 2004 Senior Bowl; helping the North team to a 17–0 victory.
Professional career
Pre-draft
Oakland Raiders
Schweigert was drafted in the third round of the 2004 NFL Draft by the Oakland Raiders. In his rookie year, he put up 52 tackles and three pass deflections. The following year, he improved to 87 tackles, seven pass deflections and two interceptions. In 2006, he continued to improve by amassing 107 tackles and four pass deflections. In 2007, Schweigert was injured and only recorded 69 tackles, four pass deflections and two interceptions. On May 21, 2008, Schweigert was officially released by the Raiders.
On June 2, 2008, Schweigert was signed by the Washington Redskins. He was cut by the Redskins on August 4, 2008, due to his poor performance throughout preseason.
Schweigert was signed by the Detroit Lions on November 19, 2008 after the team waived safety LaMarcus Hicks. He played six games with the team but was eventually cut by the Lions on September 5, 2009 before the regular season.
In May 2010, Schweigert signed with the Omaha Nighthawks of the United Football League. Schweigert played with the Nighthawks until their collapse midway through the 2012 season. During the 2011 season, Schweigert played well enough to earn the UFL's Defensive Player of the Year Award.
In 2011, Schweigert was the Director of Player Development for the Saginaw Sting. Later in the year, he and two other businessmen joined up to buy the franchise, and they now play in the Continental Indoor Football League. The Sting went undefeated in 2012, winning the 2012 CIFL Championship Game by a score of 35–7 over the Dayton Silverbacks. In July 2012, Rob Licht, Jim O'Brien and Schweigert, purchased the CIFL from Jeff Spiteleri. Schweigert and the other new owners of the league look to help current teams brand their product better, as well as look to expand the league, but their primary goal is to have competitive franchises.