Cal. Pen. Code § 337c
Any person who accepts, or attempts to accept, or offers to accept, or agrees to accept, any money, bribe or thing of value, with the intention or understanding or agreement that he or she will not use his or her best efforts to win any sporting event, contest, or exhibition of any kind whatsoever, except a wrestling exhibition as defined in Section 18626 of the Business and Professions Code, and specifically including, but without being limited to, such sporting events, contests, or exhibitions as baseball, football, basketball, boxing, horse racing, and wrestling matches, in which he or she is playing or participating or is about to play or participate in, or will so conduct himself or herself in such sporting event, contest, or exhibition that any other player or participant or team of players or participants shall thereby be assisted or enabled to win such sporting event, contest, or exhibition, or will so conduct himself or herself in such sporting event, contest, or exhibition as to limit his or her or his or her team's margin of victory in such sporting event, contest, or exhibition, is guilty of a felony, and shall be punished by imprisonment pursuant to subdivision (h) of Section 1170, or by a fine not exceeding five thousand dollars ($5,000), or by both that fine and imprisonment.
Ca. Pen. Code § 337c