The fight to secure honours in the 47th runnin of the Rolex 24 at Daytona looks set to be a four-way fight heading into the final hour of the event in Florida.
With a number of caution periods having prevented any one team from dominating proceedings, few would have anticipated the situation that has developed - with the top four cars covered by just two seconds approaching the 23 hour mark.
Currently, Juan Pablo Montoya leads in the #01 Ganassi Lexus Riley which has battled back from going behind the wall overnight to hold the advantage from the Brumos pairing of Joao Barbosa and Antonio Garcia - who are battling for second and third and are less than a second from the lead.
Max Angelelli lies fourth, within striking distance of the cars ahead as the quartet deals with traffic.
In GT, Jorg Bergmeister leads in the #67 TRG Porsche, two laps clear of team-mate Richard Lietz.