Following a lengthy red flag, and having languished in eighth for much of the session, Braun leapt to the top of the charts with eight minutes to go in his CORE autosport-run Oreca LMP2 with a laptime of 1m07.165s, which he followed up with an even quicker 1m06.712s.

That gave him the trifecta of fastest times in each of the practice sessions this weekend.

Braun’s speed put him 0.314s clear of Dane Cameron’s #6 Acura, which lapped in 1m07.052s. Cameron’s teammate Juan Pablo Montoya had to park for the first five minutes of the session due to an altercation with another car on Friday.

Early pacesetter Felipe Nasr, who set an original benchmark of 1m07.534s, then lowered that to 1m07.336s in the #31 Action Express Cadillac DPi, ended the session third. Jonathan Bomarito lapped his #55 Mazda just 0.089s off Nasr’s pace in fourth.

Filipe Albuquerque was fifth quickest in the #5 AXR Caddy, ahead of Ryan Dalziel in the sole ESM Nissan.

In GTLM, Porsche’s Nick Tandy led the way on a 1m14.055s in #911, a tenth ahead of Laurens Vanthoor in the #912 sister car.

Jan Magnussen was third in his Chevy Corvette, ahead of Ryan Briscoe’s Ford GT, Oliver Gavin (Corvette) and Joey Hand (Ford).

In GTD Jack Hawksworth’s Lexus set the pace on 1m15.546s, ahead of teammate Dominik Baumann and Wolf Henzler’s Porsche.

The red flag was required when John Potter went off at Turn 5 and buried his #44 Magnus Racing Audi in the tire wall.

Practice results:

Pos.	#	Driver	Class	Chassis	Time	Gap
1	54	Jon Bennett   Colin Braun	P	ORECA LMP2	1'06.712
2	6	Juan Pablo Montoya   Dane Cameron	P	Acura DPi	1'07.026	0.314
3	31	Eric Curran   Felipe Nasr	P	Cadillac DPi	1'07.336	0.624
4	55	Harry Tincknell   Jonathan Bomarito	P	Mazda DPi	1'07.424	0.712
5	5	Christian Fittipaldi   Filipe Albuquerque	P	Cadillac DPi	1'07.452	0.740
6	22	Pipo Derani   Ryan Dalziel	P	Nissan DPi	1'07.596	0.884
7	85	Simon Trummer   Robert Alon	P	ORECA LMP2	1'07.695	0.983
8	77	Oliver Jarvis   Tristan Nunez	P	Mazda DPi	1'07.755	1.043
9	7	Helio Castroneves   Ricky Taylor	P	Acura DPi	1'07.783	1.071
10	10	Jordan Taylor   Renger van der Zande	P	Cadillac DPi	1'07.799	1.087
11	52	Gustavo Yacaman   Sebastian Saavedra	P	Ligier LMP2	1'08.065	1.353
12	99	Mikhail Goikhberg   Stephen Simpson	P	ORECA LMP2	1'08.746	2.034
13	911	Nick Tandy   Patrick Pilet	GTLM	Porsche 911 RSR	1'14.055	7.343
14	912	Earl Bamber   Laurens Vanthoor	GTLM	Porsche 911 RSR	1'14.142	7.430
15	3	Jan Magnussen   Antonio Garcia	GTLM	Corvette C7.R	1'14.421	7.709
16	67	Ryan Briscoe   Richard Westbrook	GTLM	Ford GT	1'14.517	7.805
17	4	Oliver Gavin   Tommy Milner	GTLM	Corvette C7.R	1'14.630	7.918
18	66	Joey Hand   Dirk Müller	GTLM	Ford GT	1'15.010	8.298
19	25	Connor de Phillippi   Alexander Sims	GTLM	BMW M8 GTE	1'15.010	8.298
20	24	John Edwards   Jesse Krohn	GTLM	BMW M8 GTE	1'15.048	8.336
21	15	David Heinemeier Hansson  Jack Hawksworth	GTD	Lexus RC F GT3	1'15.546	8.834
22	14	Kyle Marcelli   Dominik Baumann	GTD	Lexus RC F GT3	1'16.095	9.383
23	16	Wolf Henzler   Michael Schein	GTD	Porsche 911 GT3 R	1'16.318	9.606
24	96	Bill Auberlen   Robby Foley	GTD	BMW M6 GT3	1'16.400	9.688
25	48	Bryan Sellers   Madison Snow	GTD	Lamborghini Huracan GT3	1'16.418	9.706
26	63	Jeff Segal   Cooper MacNeil	GTD	Ferrari 488 GT3	1'16.438	9.726
27	33	Jeroen Bleekemolen   Ben Keating	GTD	Mercedes-AMG GT3	1'16.476	9.764
28	44	Andy Lally   John Potter	GTD	Audi R8 LMS GT3	1'16.785	10.073
29	58	Patrick Long   Christina Nielsen	GTD	Porsche 911 GT3 R	1'16.858	10.146
30	93	Justin Marks   Lawson Aschenbach	GTD	Acura NSX GT3	1'16.925	10.213
31	86	Alvaro Parente   Katherine Legge	GTD	Acura NSX GT3	1'17.163	10.451