2003-04
This season saw some changes in the organization as the two Cougars teams chose to play at the DII level. The "Gold" team would play in the gold division of the MACHA and the DIII team would now become the "Silver" team and play in the silver division of the MACHA. Bill Cloin took over the helm of head coach for the silver team, now assisted by former Cougar player Bryan Raymer. In what would be the Cougars most successful season to date the Gold squad steamrolled throughout the season posting a combined regular season and playoff record of 25 wins, 6 losses and no ties. They captured both the MACHA Gold division regular season championship and Gold division playoff championship, by defeating Robert Morris College-Springfield 6-4 in the last game of the season. It was SIUE's first Gold Division championship. The Gold team also enjoyed national recognition as the team finished the season ranked #10 in the ACHA DII Central Region. The Silver team put in a solid effort all season long, but ended up the season with a record of 3-20-2. However, the season was considered a success as, in a rebuilding effort, the Silver team played a much stronger schedule against better opponents than they had in 2002-03.
2004-05
The SIUE Cougars had tasted glory twice in a row, and had no intentions of stopping. Playing a stronger schedule, including a trip to the State of Hockey to play Ferris State, Central Michigan, and then Lake Forest's NCAA Division 3 team on the way back home, the Cougars found themselves not only at the top of the MACHA standings, but in the regional spotlight, cracking the top 10 in the Central Region for the first time in Club history. With "Madness running through his veins", The Eagle clipper Joe DiMaggio tallied the overtime winner against RMC-Springfield in a heartstopping 4-3 tilt which would earn the Cougars their 3rd MACHA Championship. Sean Walls was named to the ACHA All-American Team, talling over 100 points in what would be his final season as a Cougar.
2005-06
With the departure of standout Sean Walls, the rest of the MACHA looked to take advantage of a suddenly "weaker" SIUE squad. In the offseason, then Southwest Missouri State, now Missouri State University began to pick up more talent from the metro-east. Lindenwood University created a D2 team ot be a new entrant in the Gold Division. No 100 pt Walls, no Bobby Mezeros quarterbacking the power play, and no Andrew Kuehnel to backstop the nets. Who could be left? Jason Walker and the St. Louis Connection comprised of Jason Perniciero, John Greffet, Matt Kaiser, and Austin Jones would have to replace the scoring lost from Walls's departure, and the Cougar Gold team would have to count on all 130 lbs. of goaltender Casey Kicielinski, a call-up from the Silver team. In an injury plaged season, and a surge from Mizzou, SIUE would finish 4th in the Division, taking the last playoff spot. A heavliy favored Mizzou team went in seemingly underestimating the Cougar team, beating the Cougars twice on home ice 7-3 and 8-4. The Cougars would prevail this time, bursting out to a 3-0 lead, to win the game 7-4. The Cougars would then face Lindenwood, who beat Mo State in 3 OT the night before. The Cougars came out with a vengance, getting 4 goals from Perniciero, and blew out Lindenwood 8-2 to win its 4th straight MACHA Championship. Jason Walker lead the MACHA with 101 points, and was second in the ACHA behind Oakland's Will McMahon with 103 pts. Kicielinski, the WebSports Radio Playoff MVP, ended the year tied with San Jose State goaltender Ryan Lowe for the national lead in wins with 24 wins, was top 5 in SV %, and top 5 in GAA in the ACHA among starting goalies. Perniciero (70 pts) and Greffet (60 pts), were 2nd and 3rd respectively in the MACHA,
2006-07
The Cougars would go into the 06-07 season needing to replace the production lost by John Greffet and Jason Perniciaro, and the defensesive help provided by Jason Gillick and Joe Thurman. Freshman Mike Dolan, Daniel Guarino, Adam Gernigin, and Ryan Salmon were called to replace themand did so in a big way. Defenseman Chance Webb carried Gillick unprecidented playing time, and was a pillar of strength on defense. The usual suspects, Jason Walker, Matt Kaiser, and Austin Jones put up unbelievable numbers (101, 66, 47 pts respectively) and helped carry the Cougars to an undefeated season in the MACHA Regular Season going 14-0. Goaltender Casey Kicielinski would finish with a 21-6 overall, and the Cougars came to within 60 minutes of their first national berth in team history, losing to Michigan in the Central Regional Final. The Cougars would go on to finish 2nd in the MACHA Playoffs to a valient Missouri State team. Walker would recieve the Offensive Player of the Year honors, Kicielinski Goaltender of the Year honors, and both would join Ryan Salmon, Matt Kaiser, Mike Dolan, and Dan Guarino on the All-MACHA Team
2007-08
Some would call this year a rebuilding year for the Cougars, but those who wore the jerseys didn't know the difference. Losing Seniors Jason Walker, Matt Kaiser, Austin Jones, and Ryan Theen, 51.9% (108 of 208 goals) of the Cougars scoring from a season ago would recieve Diplomas. The team would finish 2nd in the MACHA Gold Division and beat National Finalist Denver, and came up 44.7 seconds shy of a tie to #2 Grand Valley State losing the game 3-2 in OT. SIUE was ranked #12 in the ACHA Central region. Ryan Thomas would finsh first on the team with 49 pts, 1 point behind Mizzou's Christian Watters for the MACHA lead. The Cougars would fall to Mizzou in the Semifinals of the MACHA Playoffs by a 4-1 score. Ryan Thomas would recieve MACHA First Team honors, Casey Kicielinski and Michael Dolan would be named to the MACHA Second Team.
2008-09
Financially strapped, this year's SIUE club would have a 20 game schedule for each the Gold and Silver squads, Gold finishing 9-10-1 (1-1 in playoffs), Silver 6-13-1. Scott Cloin would take over as head coach for Larry Thatcher, as Thatcher would recover from a successful brain surgery in October of '08. While succumbing to their first losing season in 8 years, the Gold team saw many new faces join the club in addition to the youth that was already in place, establishing a core for the future. Captain Mike Dolan would lead the Cougars past Kansas University in the first round of the playoffs, but would lose to Iowa, the top seed in the tournament in the semifinals. Dolan would make the MACHA's Inagural Conference All-Star team, a team which would be comprised of the best Gold and Silver players, to play against other Conferences All-Star teams in West Chester, PA.
2009-10
This team turned around a dismal 08-09 campaign with a 20-4-1-1 season in 09-10. This season's Cougars Gold squad had 1 full year of playing together under their belt, and with the additions of Freshmen Alex Edwards, Brandon Janczak, Brad Keenan, and Abram Henson helped to reinforce the returning talent from the year before. John Wright cemented the Cougars defense among the best in MACHA, joining the team in the 2nd semester and tallying (8G, 11A) 19 points. Many Cougars had career years, most notably Jared Ippolito, who nearly doubled his point production from 20 a year ago to (21 G, 17 A) )38 this season, re-united with his high school line-mate Alex Edwards. This would also mark a banner year between the pipes, as Brandon Becker (14-4-0-1) and Luke Venker (6-0-1) each had career years and kept SIUE on the road to success.
SIUE ripped through the playoffs in convincing fashion, beating SLU 9-2, #8 Iowa 6-3, and defeating the Missouri State Ice Bears 5-1 in the MACHA Championship, capturing their 5th title in 8 seasons. SIUE finished the season ranked #15, cracking the top 15 in the Central Region for the first time since 07-08. Brandon Becker and Adam Gernigin were awarded Goaltender of the Year and Defensive Player of the Year respectively, and both joined Mike Dolan and John Wright on the All-MACHA team. Larry Thatcher and Jason Walker were named Coach of the year in Gold and SIlver, marking the first time both coaches from 1 university took home both awards.