He attended Ball State University in Muncie, Indiana, where he played on the men's tennis team for one year before transferring to Gustavus Adolphus College in St. Peter, Minnesota, where he graduated in 2003.
Butorac's parents, Jan and Tim Butorac, are directors of the Rochester Tennis Connection (Indoor & Outdoor site) in Rochester, Minnesota. His brother, Jeff, is a basketball coach at Century High School. Tim Butorac is a USPTA Professional, teaching tennis at the Rochester Indoor Tennis Club during the winter and at the Kutzky/Rochester Outdoor Tennis Center during the summer months.
Eric played at Ball State University for one year before transferring to Gustavus Adolphus College. Eric has a long history with Gustavus: his father played for coach Steve Wilkinson, and Eric attended tennis camp with Steve starting at age 5. Eric closed out his senior season of 2003 by winning both the NCAA Division III singles and doubles championships, with Kevin Whipple as his partner.
In 2014, Butorac started his year with reaching the final of the Australian Open. He then went on to win titles in Memphis and Stockholm. All of these were with partner Raven Klaasen.
In 2013, Butorac made it to the Round of 16 at the Australian Open and won the doubles title in Kuala Lumpur with Raven Klaasen.
In 2012, Butorac made the quarterfinals of the Australian Open and won the doubles title in São Paulo (with Bruno Soares).
In 2011, Butorac had his best season reaching a career-high ranking of no. 17, and finishing as the no. 9 team in the world with partner Jean-Julien Rojer of the Netherlands. They won three titles and made the semifinals of the Australian Open.
In 2010, Butorac paired with Rajeev Ram to make the quarterfinals of the Australian Open. He also won titles in Chennai (with Ram), Tokyo and Stockholm (with Rojer). He was on the 2010 roster of the Boston Lobsters in the World Team Tennis pro league.
In April, May, and June 2009, Butorac and American Scott Lipsky won the Tallahassee Tennis Challenger, the Estoril Open in Portugal, and a tournament in Nottingham, England.
In early February 2007, the US-Scots pair claimed their first doubles title in a Challenger event in Dallas, and a week later they won their first ATP title at the SAP Open. They continued their winning run the following week when the unseeded pair defeated second seeds Julian Knowle and Jürgen Melzer, 7–5, 6–3, to capture the doubles title of the Regions Morgan Keegan Championships at the Racquet Club of Memphis.
In July 2006, Butorac and Jamie Murray reached their first ATP Tour doubles final, in Los Angeles, losing in straight sets to the Bryan brothers, who were the world's top-ranked doubles team.
Butorac is the president of the ATP Player's Council. He succeeded Roger Federer as president (whom he served under as VP for the previous term).
Starting in 2010, Butorac has been the volunteer assistant coach at Harvard University. He is one of only three players from the NCAA Division III ranks to ever make a living on the tour.
In 2009 Butorac started the Minnesota Tennis Challenge, a charity event to benefit St. Paul Urban Tennis. Participants included Bob and Mike Bryan, Justin Gimelstob, Rajeev Ram, Melanie Oudin, and Somdev Devvarman. Butorac is a regular speaker at coaching conventions and USTA showcases around the country.
Current till 2016 US Open.