Coaching Staff


Sean Teepen
Assistant Head Coach Coach

Sean Teepen recantly wrapped up his first year on the Bowling Green State University men’s soccer staff. Head coach Eric Nichols announced Teepen's hiring on March 23, 2018.

Teepen, a native of Cincinnati, joined the Falcons after spending the 2017 season at Oregon State University.

“I’m very excited to be returning to my home state of Ohio and joining the BGSU men’s soccer program,” said Teepen at the time of his hiring. “Throughout this process I have heard nothing but great things about Eric, his staff, and the men’s soccer program here. After my conversations with Eric, as well as coming on campus, I knew that something special was happening here and it was definitely something I wanted to be a part of.

“I’d like to thank Coach (Steve) Simmons at Oregon State for the experience he gave me this past season, but I can’t wait to start this next chapter and I’m really looking forward to getting started at BGSU.”

BGSU closed the 2018 season with an overall record of 6-7-4, and the Falcons posted a 2-1-2 mark in MAC play. BG, picked to place fifth in the six-team conference, finished second and earned a first-round bye for the league tourney. The '18 campaign marked BGSU's second second-place finish in the last three seasons.

BG went 5-1-2 over the final eight contests of the 2018 regular season, including a six-match unbeaten streak, the program's longest since 1997.

Teepen works primarily with the goalkeepers at BGSU. Under his guidance, three different ‘keepers, including a pair of freshmen, had at least one shutout for Oregon State in 2017. The Beavers posted four wins over ranked opponents that season.

“Sean came to BGSU highly recommended,” said Nichols. “He has worked with some very high-level people in college soccer, and each one of them sings his praise.  

“Sean is driven, detail-oriented and organized.  In addition, he possesses some unique skill sets on the field and off that separated him from a very solid pool of candidates. After our first conversation on the phone, I could sense that his values and ambitions line up very well with our mission here at BGSU. Once he got to campus we could tell that he was going to be a great fit.”

Teepen joined OSU in the spring of 2017 after spending the 2016 campaign at Coastal Carolina University, where he helped the Chanticleers to Sun Belt Conference regular-season and tournament titles and an appearance in the second round of the NCAA Tournament.

Under Teepen’s tutelage, CCU placed two players on the Sun Belt first team and four on the second team. Starting goalkeeper Braulio Linares-Ortiz led the conference in goals against average (0.74), save percentage (0.814) and shut outs (6), and earned three Defensive Player of the Week honors.

In addition to his duties with the team’s goalkeepers, Teepen produced all scouting video for the Chanticleers, and managed the player GPS and Heart Rate monitors.

Prior to joining the CCU staff, Teepen served as an assistant coach and goalkeeper coach at the University of Charleston (W.Va.), his alma mater, from 2013-15. While on the staff there, he helped the Golden Eagles men’s soccer team win a combined five conference titles and earn the nation’s No. 1 ranking by the NSCAA.

In 2015, Teepen helped Charleston to a 20-3 overall record and a Mountain East Conference tournament championship. The 2014 squad went 22-1-1, was an NCAA Division II national runner-up, earned that NSCAA No. 1 national ranking and won the MEC tournament. In 2013, Teepen’s first year with the program, the Golden Eagles captured the MEC Tournament title.

During his three-year tenure at Charleston, Teepen coached five All-Americans, 10 All-Region and 18 All-Mountain East Conference selections.

His coaching experience also includes stints with the Myrtle Beach Mutiny (2016-2017), Coast FA (2016-2017), West Virginia Chaos (2014-15), University of Charleston women’s team (2013-15), West Virginia ODP (2015), Charleston FC (2014-15) and Walnut Hills High School (2014).

Teepen entered the coaching ranks following an accomplished pro and college playing career. Between 2009 and 2012, he played at the University of Charleston, where he was a four-time NSCAA All-Regional and three-time WVIAC All-Conference selection.

Teepen was a four-year starter in goal at Charleston, leading the Golden Eagles to three NCAA tournament appearances, including a trip to the Elite Eight in 2009 and Sweet 16 in 2010.

Following his graduation from Charleston in 2013, Teepen signed a professional contract with the Dayton Dutch Lions of the USL Pro Division. Teepen’s playing experience also includes stints with the Michigan Bucks, West Virginia Chaos and Myrtle Beach Mutiny in the USL Premier Development League.

Teepen earned his bachelor’s degree in interior design from the University of Charleston in 2013 and his master’s degree, also from Charleston, in strategic leadership in 2015.

“Sean is one of the top, up and coming college coaches around. His outstanding character, organizational attention to detail along with his winning background will serve Coach Nichols and the BGSU program in the highest order.”
Steve Simmons, former Oregon State University head coach

“Sean is an excellent young coach. He does a tremendous job with the ‘keepers. He’s also one of the most positive guys you will meet, which makes his coaching style that much more enticing. He’s an absolute genius behind the scenes and on social media and can make any program look like a million bucks.  He’s a great hire for Eric and BGSU, and I know they will be very successful there in the coming seasons. Sean will add to one of the most genuine and positive coaching staffs in the country.”
Chris Grassie, Marshall University Head Coach

“I am really exited to work with Coach Teepen. I am a very ambitious player, and I think he is a coach who can help me attain my objectives.”
Anthony Mwembia, BGSU Goalkeeper

Nate Kopunek
Assistant Coach

Nate Kopunek begins his first season on the men's soccer coaching staff at Bowling Green State University. Head coach Eric Nichols announced the hiring of Kopunek, who came to BGSU from Georgia Southern University, in May of 2019.

“I want to thank Coach Nichols for this great opportunity to join the BGSU men’s soccer program and continue my coaching career,” said Kopunek. “Throughout the interview process, I heard nothing but great things about Eric and the men’s soccer program.

“After coming on campus and meeting the staff and team, I can feel there is something special happening here. I can’t wait to get to Bowling Green and get started as a Falcon! Lastly, I would like to thank all the coaches that have mentored me along the way.”

In his lone season with Georgia Southern, Kopunek helped the Eagles advance to the championship match of the Sun Belt Conference Tournament. GSU went 7-7-3 overall and 2-1-1 in conference play, tying for second in the league standings. 

The Eagles ended the season ranked 75th in the RPI after being ranked as high as 69th, the best ranking in program history, during the year. Senior Javier Carbonell was named the Sun Belt's Offensive Player of the Year while sharing overall league Player-of-the-Year honors.

“Nate has developed an effective set of tools, having worked for three well-respected college coaches,” said Nichols. “At the foundation of what Nate brings is character and we are excited to welcome him to our family.”

Kopunek joined the Eagles from Yale University where he served as the team’s Director of Operations and Player Personnel. He helped the Bulldogs to a third-place finish in the Ivy League in 2017, the program’s best finish since the 2005 season. Yale saw four players named to the All-Ivy League Team, and the men’s soccer Bulldogs also earned an NCAA APR Public Recognition award.

Prior to Yale, Kopunek spent four seasons at George Mason University, helping the Patriots to a No. 12 national ranking and a final RPI of 33 in 2014. George Mason featured one All-American and three All-Region performers in his time there, and the Patriots also had players signed by both the New England Revolution and the Philadelphia Union of MLS.

Kopunek also has extensive club experience, coaching on the AC Connecticut Juniors staff as well as Maryland United FC, the Baltimore Bays Chelsea USSF Development Academy and the Fewster FC club. He also assisted with DC United game-day operations beginning in 2007.

A native of Annapolis, Md., Kopunek is a 2014 graduate of Towson University, where he earned his bachelor’s degree in business administration with a concentration in legal studies. He also holds a USSF National D License, a United Soccer Coaches Goalkeeping Level 1 Diploma and a United Soccer Coaches Special Topics Diploma: The Art of the Assistant.