The Oak Tree meeting card at Santa Anita failed to reach its $1 million-guaranteed pick-six pool on Saturday, attracting $872,094 in wagers.
Oak Tree's executive vice-president, Sherwood Chillingworth, said the track had purchased an insurance policy to protect against a shortfall.
Chillingworth said the small pool was not a complete surprise, since the track had pick-six carryovers on Thursday and Friday of last week that "drained" bettors.
Chillingworth also noted that "the guaranteed pick six may have lost its glamour."