Case Keenum has the most career completions, with 1,546 completions.

Interpreted as:

most completions by a player to start a career

	NAME	CMP	GP	ATT	PCT	YDS	AVG	YDS/G	TD	INT	RTG	TD%	INT%	SCK	SCKY
1	Case Keenum C. Keenum	1,546	57	2,229	69.4	19,217	8.6	337.1	155	46	160.6	7.0	2.1
2	Will Rogers W. Rogers	1,521	54	2,187	69.5	14,773	6.8	273.6	108	35	139.4	4.9	1.6	110	779
3	Luke Falk L. Falk	1,403	43	2,054	68.3	14,481	7.1	336.8	119	39	142.8	5.8	1.9	124	859
4	Graham Harrell G. Harrell	1,403	45	2,010	69.8	15,793	7.9	351.0	134	34	154.4	6.7	1.7
5	Landry Jones L. Jones	1,388	52	2,183	63.6	16,646	7.6	320.1	123	52	141.5	5.6	2.4
6	Timmy Chang T. Chang	1,388	53	2,436	57.0	17,072	7.0	322.1	117	80	125.1	4.8	3.3
7	Dillon Gabriel D. Gabriel	1,376	64	2,111	65.2	18,722	8.9	292.5	155	32	160.9	7.3	1.5	111	676
8	Bo Nix B. Nix	1,286	61	1,936	66.4	15,352	7.9	251.7	113	26	149.6	5.8	1.3	60	388
9	Kliff Kingsbury K. Kingsbury	1,229	43	1,881	65.3	12,423	6.6	288.9	95	40	133.2	5.1	2.1
10	Sean Mannion S. Mannion	1,187	47	1,838	64.6	13,600	7.4	289.4	83	54	135.8	4.5	2.9
11	Corey Robinson C. Robinson	1,179	48	1,823	64.7	13,472	7.4	280.7	81	48	136.1	4.4	2.6
12	Dan Lefevour D. Lefevour	1,171	53	1,763	66.4	12,905	7.3	243.5	102	36	142.9	5.8	2.0
13	Kellen Moore K. Moore	1,157	53	1,658	69.8	14,667	8.8	276.7	142	28	169.0	8.6	1.7
14	Colt McCoy C. McCoy	1,157	53	1,645	70.3	13,253	8.1	250.1	112	45	155.0	6.8	2.7
15	Rakeem Cato R. Cato	1,153	53	1,838	62.7	14,079	7.7	265.6	131	44	145.8	7.1	2.4
16	Connor Bazelak C. Bazelak	1,151	58	1,828	63.0	12,349	6.8	212.9	66	39	127.4	3.6	2.1	102	756
17	Seth Henigan S. Henigan	1,148	50	1,792	64.1	14,278	8.0	285.6	104	31	146.7	5.8	1.7	96	542
18	Sam Hartman S. Hartman	1,136	60	1,898	59.9	15,656	8.2	260.9	134	49	147.3	7.1	2.6	129	804
19	Holton Ahlers H. Ahlers	1,127	55	1,857	60.7	13,936	7.5	253.4	97	37	137.0	5.2	2.0	104	707
20	Colt Brennan C. Brennan	1,115	38	1,584	70.4	14,193	9.0	373.5	131	42	167.6	8.3	2.7
21	Chase Daniel C. Daniel	1,094	51	1,609	68.0	12,515	7.8	245.4	101	41	148.9	6.3	2.5
22	Derek Carr D. Carr	1,087	45	1,630	66.7	12,848	7.9	285.5	113	24	152.8	6.9	1.5
23	Philip Rivers P. Rivers	1,087	49	1,711	63.5	13,484	7.9	275.2	95	34	144.1	5.6	2.0
24	Chase Holbrook C. Holbrook	1,086	36	1,565	69.4	11,846	7.6	329.1	85	41	145.7	5.4	2.6
25	Michael Penix Jr. M. Penix Jr.	1,067	48	1,685	63.3	13,741	8.2	286.3	96	34	146.6	5.7	2.0	32	223