Unknown, at 5-1, made up five lengths in the final furlong and beat the 7-5 favorite Light Our Way by a neck in Saturday's seventh race at Gulfstream Park.
The race was the start of the Rainbow 6 and featured a carryover of $3,366,29 in the Super Hi-5, which was hit for $6,237.20 by one ticket that was the $1 minimum.
Bettors added $3,501 to the Super Hi-5 pool. The numbers for the first five finishers were 3-7-2-6-4.
A new pool on that bet starts in the eighth race.
The carryover coming in on the Rainbow 6 was $31,600. Bettors added $31,981 to that pool.