In the summer of 2006 it was announced that Phillips Field would undergo a $5.9 million overhaul with the goal of making UNC Charlotte's baseball facilities top-notch.

The project was funded by the late Mariam Cannon Hayes, a local philanthropist who had contributed money to numerous educational programs and facilities throughout North Carolina such as the Barnhardt Student Activity Center at UNC Charlotte and the school of music at Appalachian State University.The renovation affected all aspects of the baseball facility at UNC Charlotte with the exception of the playing surface.

On May 11, 2007, the hospitality suite that is part of the new facility was named in honor of Erik Walker, a former pitcher with the 49ers and the Tampa Bay Devil Rays organization who was killed in a canoeing accident in October 2006.

During the initial stages of the renovation, Charlotte's baseball team practiced at local high school facilities.

En route to the 2007 Atlantic 10 conference title, the 49ers went 25–4 in all home games, including a 13–3 record at Hayes Stadium.

The chairback seats were in place by late April, but the bleachers, pressbox, restrooms, and concession stands were not finished in time for the end of the season.