Question: Visco Grgich, was a professional American football lineman who played in the All-America Football Conference and the National Football League, at the end of his pep talk, Grgich would say "This is the way you've gotta do it!", and would promptly deliver a forearm shiver to the nearest door, wall or even one of the wooden support posts in which outdoor athletics stadium in San Francisco, California, located adjacent to Kezar Pavilion in the southeastern corner of Golden Gate Park?
Context: This article is a list of seasons completed by the San Francisco 49ers, an American football franchise representing the San Francisco Bay Area.  The 49ers are members of the West division in the National Football Conference (NFC) of the National Football League (NFL).  The list documents the season-by-season records of the 49ers' franchise from to present, including postseason records, and league awards for individual players or head coaches.  The San Francisco 49ers began play in 1946 as charter members of the All-America Football Conference. The San Francisco Marathon is a series of USATF certified road running events held each June, July or August in San Francisco, California that include a full marathon, two half marathons, an ultramarathon, and a 5K.  Except for in 1988, the marathon has been held annually since 1977.  The current marathon course forms a loop that starts and finishes on the Embarcadero near the Ferry Building.  The course runs past many notable landmarks in San Francisco including Fisherman's Wharf, Aquatic Park, the Golden Gate Bridge, Golden Gate Park, and AT&T Park.  The course briefly enters Marin County at the northern end of the Golden Gate Bridge. Knox Wagner "Bulldog" Ramsey (February 13, 1926 – March 19, 2005) was an American football offensive lineman in the National Football League for the Chicago Cardinals, the Philadelphia Eagles, and the Washington Redskins.  Ramsey also played in the All-America Football Conference for the Los Angeles Dons.  When the All-America Football Conference dissolved in 1950, the NFL an AAFC dispersal draft to assign players from the Buffalo Bills, Chicago Hornets and Los Angeles Dons.  Ramsey was drafted (1st Round) by the San Francisco 49ers as the 10th overall pick and traded to the Chicago Cardinals. Golden Gate Park, located in San Francisco, California, United States, is a large urban park consisting of 1017 acres of public grounds.  It is administered by the San Francisco Recreation & Parks Department, which began in 1871 to oversee the development of Golden Gate Park.  Configured as a rectangle, it is similar in shape but 20 percent larger than Central Park in New York, to which it is often compared.  It is over three miles (3 mi ) long east to west, and about half a mile (0.5 mi ) north to south.  With 13 million visitors annually, Golden Gate is the fifth most-visited city park in the United States after Central Park in New York City, Lincoln Park in Chicago, and Balboa and Mission Bay Parks in San Diego. Visco Grgich (January 19, 1923 – December 26, 2005) was a professional American football lineman who played in the All-America Football Conference and the National Football League.  He played seven seasons for the San Francisco 49ers.  He was originally drafted by the Chicago Bears in the 1946 NFL Draft.  Grgich was known as a tough and sometimes vicious two-way lineman who loved to intimidate Norm Van Brocklin.  Grgich was also known for his rousing pep talks prior to games and was even brought back by Coach Frank Albert to give pep talks after his playing days were through.  At the end of his pep talk, Grgich would say "This is the way you've gotta do it!"  and would promptly deliver a forearm shiver to the nearest door, wall or even one of the wooden support posts in Kezar Stadium which was rumoured to be felt throughout Kezar Stadium.  He is distinguished as being the first Yugoslav to play in the National Football League. Hardy Brown (May 8, 1924 – November 8, 1991) was an American football linebacker in the National Football League (NFL), All-America Football Conference (AAFC), and the American Football League (AFL).  He played college football at the University of Tulsa and then professionally for the San Francisco 49ers, Washington Redskins, and the Denver Broncos.  He was one of only two men who played in the All-America Football Conference, the National Football League, and the American Football League (the other was Ben Agajanian). Kezar Stadium is an outdoor athletics stadium in San Francisco, California, located adjacent to Kezar Pavilion in the southeastern corner of Golden Gate Park.  It is the former home of the San Francisco 49ers and the Oakland Raiders (first AFL season only) of the National Football League (NFL) and of the San Francisco Dragons of Major League Lacrosse.  It also served as the home of the California Victory of the USL First Division before the club folded.  Currently it is the home of the San Francisco Deltas, professional soccer team playing in the North American Soccer League (NASL) Kezar Pavilion, located adjacent to Kezar Stadium, is an indoor arena in the southeast corner of Golden Gate Park, San Francisco, California, United States (US).  Built in 1924, the Pavilion seats 4,000 people and is owned and operated by the City of San Francisco.  The San Francisco Rumble, of the American Basketball Association, and the Academy of Art Urban Knights, an NCAA Division II school, call Kezar Pavilion their home court. The Panhandle is a park in San Francisco, California, that forms a panhandle with Golden Gate Park.  It is long and narrow, being three-quarters of a mile long and one block wide.  Fell Street borders it to the north, Oak Street to the south, and Baker Street to the east.  Only two streets run through it - Stanyan Street at the western end between it and Golden Gate Park and Masonic Avenue through the middle.  Two paved walking paths run through it from Golden Gate Park to Baker Street, one allowing bicycles.  There are basketball courts, a public restroom, and a playground in the section between Stanyan Street and Masonic Avenue. The National Football League (NFL) is a professional American football league consisting of 32 teams, divided equally between the National Football Conference (NFC) and the American Football Conference (AFC).  The NFL is one of the four major professional sports leagues in North America, and the highest professional level of American football in the world.  The NFL was founded in 1920.  In the course of its existence, it has merged with the All-America Football Conference and the American Football League (AFL) to create the current NFL.  The All-America Football Conference merged with the NFL in , and the AFL merged with the NFL in .  The history and records of the AFL were incorporated into the NFL.
Answer: Kezar Stadium