Hattrup was a four-year starter as a star player for the Seattle Preparatory School boys' soccer team.
Hattrup was a scoring sensation for Seattle Pacific men's NCAA Division II soccer team.
Hattrup did not merely garner multiple individual honors, but was an integral part of two Division II championship teams, in 1983 and 1985.
In the 1985 championship victory over FIU, Hattrup scored a goal and assisted another, earning MVP honors.
Seattle played games against professional clubs, its independent nature allowed Hattrup to retain his amateur NCAA eligibility.
After finishing his time with Seattle Pacific, Hattrup began a professional career which would take him through numerous leagues and almost a dozen teams.
In 1986, the Tacoma Stars of the Major Indoor Soccer League selected Hattrup as the top draft pick.
They won the MISL Western Division, but lost to the Dallas Sidekicks 4 games to 3 in the championship series.
The next year, the Attack joined the National Professional Soccer League and again lost to the Dynamo, this time in the first round of the playoffs.
In Hattrup's last year with the team, they finally found success and defeated the Cleveland Crunch to take the NPSL title.
It appeared that Hattrup had finally made the big time, as a teammate of Carlos Valderrama and Roy Lassiter.
Between those last two stints with the Sounders, Hattrup rejoined Keith Tozer, now head coach of the Milwaukee Wave of the National Professional Soccer League.
He is an assistant coach of the Seattle Sounders Women, which play in the United Soccer League W-League.
In 2006, he took his U14 girls team, Washington Crossfire, to the Super Y-League North American championship at the Ed Rice Complex in Tampa, Florida.