The Side-Out Foundation, located in Fairfax, Virginia, is an American non-profit breast cancer charity that raises awareness and funds for the treatment of metastatic breast cancer.

Their mission, as it is stated on their website is, "to unite volleyball players and coaches and to have them work toward the common goal of furthering breast cancer awareness, education, and patient services.

[2] The Side-Out Foundation was established in 2004 by West Springfield High School girls volleyball coach Rick Dunetz, after his mother, Gloria Dunetz, was diagnosed with stage IV breast cancer.

Each year hundreds of Middle School, High School, and College volleyball teams host Dig Pink events as part of the rally to raise both funds and awareness for metastatic breast cancer.

[7][8] The Side-Out Protocol focuses on the treatment of metastatic breast cancer using applied proteomics and molecular medicine.