In total he made over 300 professional appearances, was Major League Soccer MVP in 1999, and is currently tied for the fifth highest scorer in MLS regular season history, with 108 goals.

Following his freshman year, Kreis and his family moved to Mandeville, Louisiana, where he led Mandeville High School to several Class 5A state soccer tournaments, but never won a state title, losing to Lafayette High, led by stars Shammi Gupta and Wayne Shullaw, in the quarterfinals his senior year.

While at Mandeville, he was also a standout performer for the Baton Rouge United Jags, a U-19 Select team that finished as national runner-up in 1991 and won the prestigious Capital Cup tournament in Washington, D.C.

A first team All-America pick in 1993 and 1994, Kreis finished his college career with 39 goals and 38 assists, ranking fifth all-time in scoring.

[citation needed] Kreis remained the MLS all time goalscoring leader for more than three years until Jaime Moreno surpassed his record on August 22, 2007.

[7] On August 13, 2005, he became the first player in MLS history to score 100 career league goals, during a 4–2 loss to the Kansas City Wizards.

[8] The achievement was unexpected from observers, especially out of a 1996 class that included other candidates like Eric Wynalda, Brian McBride, or Joe-Max Moore; Kreis had never been considered a particularly dangerous goalscorer and had only lead the league in scoring once, in 1999.

[9] Kreis was left unprotected in the 2006 MLS Expansion Draft by Real Salt Lake and subsequently chosen by Toronto FC.

He led Real Salt Lake to its first-post season playoff appearance in 2008 and in 2009 he coached the team to its first MLS Cup championship.

Real Salt Lake won Group A and made it all the way to the 2011 CONCACAF Champions League Finals, only to lose to 3–2 on aggregate to C.F.

[19] The move came just four days after he missed out on lifting his second MLS Cup with the Utah team, losing on penalty kicks to Sporting Kansas City.

The club finished with a 10–17–7 record in the regular season placing 8th in the Eastern Conference, failing to make the 2015 MLS Cup Playoffs.