Kyle Busch gets some Ford help to lead first practice at Daytona

Busch ran with a group of Ford drivers about 34 minutes into the first practice and posted the fastest average lap speed of 200.754 mph.

Ty Dillon ended up second (200.682 mph) and Chris Buescher was third (200.638 mph). Jimmie Johnson was fourth and Austin Dillon completed the top-five.

The practice session was called after about 37 minutes when lightning strikes were reported in the vicinity of Daytona International Speedway.

Rounding out the top-10 in practice were Ryan Newman, Daniel Hemric, Kyle Larson, Kurt Busch and Chase Elliott.

In all, the top 13 drivers averaged more than 200 mph in their respective top practice laps.

There was one other caution during the session about six minutes in when fluid and debris were discovered on the track. Practice resumed shortly thereafter. 

Much like they did at Talladega Superspeedway earlier this season, drivers with the same manufacturer spent more of their drafting time with each other.

Cla	#	Driver		Manufacturer	Laps	Time	Gap	Interval	Mph
1	18	Kyle Busch		Toyota	18	44.831			200.754
2	13	Ty Dillon		Chevrolet	18	44.847	0.016	0.016	200.682
3	37	Chris Buescher		Chevrolet	21	44.857	0.026	0.010	200.638
4	48	Jimmie Johnson		Chevrolet	23	44.921	0.090	0.064	200.352
5	3	Austin Dillon		Chevrolet	17	44.922	0.091	0.001	200.347
6	6	Ryan Newman		Ford	15	44.926	0.095	0.004	200.329
7	8	Daniel Hemric		Chevrolet	20	44.931	0.100	0.005	200.307
8	42	Kyle Larson		Chevrolet	26	44.933	0.102	0.002	200.298
9	1	Kurt Busch		Chevrolet	22	44.934	0.103	0.001	200.294
10	9	Chase Elliott		Chevrolet	25	44.935	0.104	0.001	200.289
11	24	William Byron		Chevrolet	25	44.938	0.107	0.003	200.276
12	88	Alex Bowman		Chevrolet	20	44.941	0.110	0.003	200.263
13	38	David Ragan		Ford	21	44.992	0.161	0.051	200.036
14	2	Brad Keselowski		Ford	23	45.013	0.182	0.021	199.942
15	22	Joey Logano		Ford	28	45.020	0.189	0.007	199.911
16	12	Ryan Blaney		Ford	24	45.035	0.204	0.015	199.845
17	17	Ricky Stenhouse Jr.		Ford	22	45.040	0.209	0.005	199.822
18	21	Paul Menard		Ford	26	45.041	0.210	0.001	199.818
19	4	Kevin Harvick		Ford	17	45.044	0.213	0.003	199.805
20	20	Erik Jones		Toyota	19	45.046	0.215	0.002	199.796
21	10	Aric Almirola		Ford	24	45.050	0.219	0.004	199.778
22	41	Daniel Suarez		Ford	21	45.050	0.219	0.000	199.778
23	14	Clint Bowyer		Ford	17	45.097	0.266	0.047	199.570
24	47	Ryan Preece		Chevrolet	15	45.159	0.328	0.062	199.296
25	43	Darrell Wallace Jr.		Chevrolet	21	45.160	0.329	0.001	199.291
26	34	Michael McDowell		Ford	24	45.215	0.384	0.055	199.049
27	11	Denny Hamlin		Toyota	6	45.824	0.993	0.609	196.404
28	95	Matt DiBenedetto		Toyota	3	46.068	1.237	0.244	195.363
29	96	Parker Kligerman		Toyota	9	46.230	1.399	0.162	194.679
30	36	Matt Tifft		Ford	6	46.558	1.727	0.328	193.307
31	00	Landon Cassill		Chevrolet	7	46.671	1.840	0.113	192.839
32	19	Martin Truex Jr.		Toyota	5	47.373	2.542	0.702	189.982
33	32	Corey Lajoie		Ford	6	47.564	2.733	0.191	189.219
34	27	Ross Chastain		Chevrolet	1	57.736	12.905	10.172	155.882
35	62	Brendan Gaughan		Chevrolet