Sunflower Showdown to pay for the construction of Allen Fieldhouse, which would seat 17,000. KU opened the facility with a 77–66 victory over Kansas State on March 1, 1955. This period also saw the beginning of the 'Sunflower Doubleheader', with two non-conference teams visiting the state to play KU and K-State at one venue one night, then switching venues and opponents the following evening. This event was held from 1957 to 1968, and featured national powerhouses such as UCLA, Xavier, San Francisco, St. Joseph's, Cal, and Marquette. The basketball rivalry between the two schools continued unabated through the 1960s and 1970s, with
Georgia State Route 300 in a different part of the state, was much shorter, traveling from Monticello to a point northeast of Monticello (and about north of Eatonton), and existed from the 1960s to the 1980s. SR 300 begins at the Florida state line, where it is concurrent with US 19. On the Florida side of the state line, US 19 is concurrent with Florida State Road 57 (SR 57, which is unsigned), and is known as the Florida–Georgia Parkway. At the state line, SR 3 and SR 300 begin. US 19/SR 3/SR 300 head northwest until they enter Thomasville. In the city, they