Driver Loop Data Stats - Racing-Reference

2021 NASCAR Cup Series Loop Data stats for William Byron

Click on the Race to see results for that race.

Race	Start	Mid Race	Finish	High Pos.	Low Pos.	Avg. Pos.	Pass Diff.	Green Flag Passes	Green Flag Times Passed	Quality Passes	Pct. Quality Passes	Fastest Lap	Top 15 Laps	Pct. Top 15 Laps	Laps Led	Pct. Laps Led	Total Laps	DRIVER RATING
1	2	27	26	2	32	27	5	39	34	0	0.0	2	0	0.0	0	0.0	191	51.1
2	22	6	33	6	34	15	7	85	78	29	34.1	0	45	65.2	0	0.0	69	75.2
3	31	3	1	1	31	4	33	79	46	47	59.5	33	260	97.4	102	38.2	267	139.8
4	2	10	8	1	24	6	7	126	119	102	81.0	31	263	98.5	25	9.4	267	111.4
5	10	8	8	5	32	11	28	134	106	75	56.0	7	265	84.9	0	0.0	312	94.3
6	9	6	8	1	17	7	-4	69	73	46	66.7	5	322	99.1	2	0.6	325	98.7
7	8	3	6	1	11	5	-1	26	27	26	100.0	21	253	100.0	0	0.0	253	110.3
8	3	11	4	1	15	7	8	65	57	63	96.9	22	500	100.0	9	1.8	500	107.5
9	4	11	7	2	25	8	-11	97	108	61	62.9	6	393	98.2	0	0.0	400	102.6
10	4	2	2	1	30	12	11	366	355	213	58.2	5	117	61.3	12	6.3	191	99.4
11	2	18	9	1	27	10	0	98	98	53	54.1	17	199	74.5	0	0.0	267	98.0
12	5	5	4	2	27	6	1	80	79	42	52.5	3	288	98.3	0	0.0	293	111.5
13	3	3	4	1	14	4	5	18	13	18	100.0	26	400	100.0	21	5.2	400	117.7
14	5	26	11	3	38	18	-31	75	106	29	38.7	0	26	48.1	0	0.0	54	82.5
15	4	3	4	1	13	3	6	81	75	67	82.7	51	400	100.0	19	4.8	400	119.2
16	3	3	35	1	32	15	-24	78	102	30	38.5	5	59	77.6	5	6.6	76	81.3
17	4	8	3	2	33	11	25	81	56	20	24.7	0	208	69.3	0	0.0	300	98.5
18	2	4	3	1	29	7	4	56	52	34	60.7	11	115	88.5	13	10.0	130	113.0
19	18	19	12	1	33	9	-2	73	75	42	57.5	16	114	81.4	22	15.7	140	111.5
20	1	2	33	1	34	12	-2	24	26	15	62.5	6	45	72.6	15	24.2	62	74.1
21	19	10	20	4	24	13	-8	80	88	36	45.0	1	169	65.3	0	0.0	259	71.7
22	16	15	21	2	25	15	7	74	67	37	50.0	2	172	58.9	0	0.0	292	67.3
23	15	8	6	4	32	9	20	50	30	25	50.0	1	76	84.4	0	0.0	90	104.4
24	1	2	33	1	21	11	-19	59	78	27	45.8	1	75	97.4	1	1.3	77	98.8
25	18	8	2	1	28	8	28	141	113	77	54.6	25	177	88.5	18	9.0	200	114.4
26	2	20	38	1	29	14	-9	263	272	199	75.7	1	112	76.7	12	8.2	146	86.1
27	14	7	34	6	36	25	28	101	73	19	18.8	3	82	41.2	0	0.0	199	61.8
28	14	11	19	4	25	16	-8	82	90	31	37.8	3	188	47.2	0	0.0	398	68.8
29	14	4	3	2	18	8	21	72	51	72	100.0	19	500	100.0	0	0.0	500	104.8
30	3	24	18	1	31	11	15	126	111	66	52.4	21	175	65.8	7	2.6	266	99.0
31	10	12	36	1	31	16	-11	343	354	158	46.1	3	70	60.9	0	0.0	115	64.3
32	11	1	11	1	23	5	-13	67	80	38	56.7	9	106	97.2	30	27.5	109	124.2
33	12	2	2	1	14	2	4	51	47	43	84.3	57	334	100.0	55	16.5	334	125.1
34	9	2	6	1	14	3	22	76	54	67	88.2	47	267	100.0	57	21.3	267	124.2
35	11	3	5	2	14	5	10	42	32	42	100.0	21	501	100.0	0	0.0	501	113.1
36	3	15	17	3	24	11	14	88	74	50	56.8	3	245	78.5	0	0.0	312	88.0

Green Flag Passes: Green flag passes for position.

Pass Diff.: Difference between Green Flag Passes and Green Flag Times Passed.

Quality Passes: Number of times passing a car running in the Top 15 while under a green flag.

Fastest Lap: How many times a driver had the fastest lap of all drivers.

Driver Rating: A formula combining the following categories: Win, Finish, Top-15 Finish, Average Running Position while on Lead Lap, Average Speed Under Green, Fastest Lap, Led Most Laps, Lead-Lap Finish. Maximum: 150 points per race.