Who is Chris O'Brien?
Chris O'Brien may refer to: Chris O'Brien (American football) (1881–1951), owner of the Chicago Cardinals and co-founder of the National Football League Chris O'Brien (baseball) (born 1989), minor league baseball player Chris O'Brien (rugby) (born 1950), Welsh rugby league player Chris O'Brien (surgeon) (1952–2009), Australian oncologist and surgeon Chris O'Brien (rugby union) (born 1964), United States rugby union player