in 2008, the university's varsity teams used Seagram Stadium as their home stadium. Seagram Stadium was built by the university's predecessor, Waterloo College Associate Faculties, and remained under the ownership of the university until 1974, when it was sold to the City of Waterloo. However, the university continued to use Seagram Stadium until 2008. Other facilities include the Physical Activity Complex, which houses two gymnasiums, beach volleyball courts, squash rooms, and a swimming pool, and is also home to the university's varsity badminton, basketball, squash, swimming and volleyball teams. The Columbia Ice Field was constructed in 1983 and houses the university's hockey team home rink, with a seating capacity of 700. The Ice Field has been expanded twice, in 1990 and 2003, and now includes three gyms and a number of fitness centres. Including the football field, the university manages seven outdoor playing fields, with Fields 1 and 2 reserved for the varsity soccer and rugby teams, while portions of Field 3 are used as a baseball field. The rest of the fields are used by the university's recreational sports programs. Entrepreneurship The University of Waterloo operates a startup incubator for its students, faculty, and alumni called the Velocity program. With no fees or equity, it is the largest free startup incubator in the world. It offers office space for up to 120 startup companies, as well as a wet laboratory, assembly space, workshop, and prototyping lab. The program also provides business mentorship to its resident companies and to Waterloo students as well as partnerships with researchers at the university's main campus. Velocity provides some students and startups with grants, previously valued from C$5,000 to C$25,000. As of 2019, the $25,000 grant was removed and companies in Velocity may now pitch their ideas to instead receive C$50,000 in funding, with equity stakes from investors. Companies that emerged from the Velocity program include Maluuba. In addition to the resources provided by Velocity, alumni regularly receive funding for their startups from United States accelerators. Companies Waterloo alumni have founded with the aid of Silicon Valley accelerator Y Combinator include Pebble and Bufferbox. Y Combinator founder Paul Graham and president Sam Altman have both noted the University of Waterloo has stood out to them more than any other school during Y Combinator applications. In 2017, Pitchbook Data ranked the University of Waterloo's undergraduate program fourth for schools that have the greatest number of