The Matthew Knight Arena (MKA) is a 12,364-seat, multi-purpose arena in Eugene, Oregon, United States. It is home of the Oregon Ducks men's & women's basketball teams, along with the volleyball team, replacing McArthur Court. All teams compete in the Big Ten Conference starting with the 2024-25 season after their time as members of the Pac-12 Conference. It is located on the east side of campus at the corner of Franklin Boulevard and Villard Street, a gateway to campus as people arrive from I-5. The arena was originally intended to be ready for the start of the 2010–11 basketball season, but instead opened for the men's basketball game against the USC Trojans on January 13, 2011. It is named for chief donor Phil Knight's son, Matthew Knight, who died aged 34 in a scuba diving accident. The arena cost $227 million and was designed as collaboration between TVA Architects of Portland and Ellerbe Becket of Kansas City, Missouri. Hoffman Construction Company of Portland was the general contractor.