Case Keenum had the most games with 300+ passing yards, with 39 games.

Interpreted as:

Who has the most 300 or more passing yard games?

	NAME	GP	YDS	CMP	ATT	PCT	AVG	YDS/G	TD	INT	RTG	TD%	INT%	SCK	SCKY
1	Case Keenum C. Keenum	39	15,950	1,269	1,820	69.7	8.8	409.0	134	24	165.0	7.4	1.3
2	Timmy Chang T. Chang	36	13,585	1,064	1,795	59.3	7.6	377.4	99	54	135.0	5.5	3.0
3	Graham Harrell G. Harrell	33	13,855	1,232	1,721	71.6	8.1	419.8	121	28	159.2	7.0	1.6
4	Colt Brennan C. Brennan	30	12,485	955	1,356	70.4	9.2	416.2	122	35	172.3	9.0	2.6
5	Luke Falk L. Falk	29	11,541	1,100	1,562	70.4	7.4	398.0	101	28	150.2	6.5	1.8	94	641
6	Landry Jones L. Jones	27	10,645	827	1,231	67.2	8.6	394.3	89	27	159.3	7.2	2.2
7	Tim Rattay T. Rattay	27	11,211	862	1,308	65.9	8.6	415.2	61	25	149.5	4.7	1.9
8	Dillon Gabriel D. Gabriel	25	9,326	649	968	67.0	9.6	373.0	76	13	171.2	7.9	1.3	45	260
9	Michael Penix Jr. M. Penix Jr.	25	9,430	678	1,020	66.5	9.2	377.2	67	16	162.7	6.6	1.6	19	137
10	Baker Mayfield B. Mayfield	24	8,920	591	828	71.4	10.8	371.7	75	14	188.4	9.1	1.7	55	338
11	Corey Robinson C. Robinson	24	8,501	689	1,045	65.9	8.1	354.2	47	23	144.7	4.5	2.2
12	Chase Holbrook C. Holbrook	24	9,493	842	1,206	69.8	7.9	395.5	69	26	150.5	5.7	2.2
13	Will Rogers W. Rogers	23	8,603	856	1,146	74.7	7.5	374.0	70	12	155.8	6.1	1.0	47	323
14	Mason Rudolph M. Rudolph	23	9,107	559	859	65.1	10.6	396.0	68	12	177.5	7.9	1.4	48	267
15	Seth Henigan S. Henigan	22	7,933	583	893	65.3	8.9	360.6	56	16	157.0	6.3	1.8	50	274
16	Sam Hartman S. Hartman	22	7,620	514	841	61.1	9.1	346.4	68	21	158.9	8.1	2.5	47	277
17	Patrick Mahomes P. Mahomes	22	9,655	691	1,093	63.2	8.8	438.9	79	16	158.3	7.2	1.5	45	336
18	Brandon Doughty B. Doughty	22	9,044	678	957	70.8	9.5	411.1	82	14	175.6	8.6	1.5	24	175
19	Jared Goff J. Goff	22	8,750	636	1,018	62.5	8.6	397.7	68	20	152.8	6.7	2.0	58	422
20	Sean Mannion S. Mannion	22	8,117	659	983	67.0	8.3	369.0	60	25	151.5	6.1	2.5
21	Cam Ward C. Ward	21	7,626	586	870	67.4	8.8	363.1	61	14	160.9	7.0	1.6	59	379
22	Brett Rypien B. Rypien	21	7,547	510	783	65.1	9.6	359.4	58	12	167.5	7.4	1.5	39	228
23	Shane Carden S. Carden	21	8,131	682	995	68.5	8.2	387.2	63	14	155.3	6.3	1.4
24	Connor Halliday C. Halliday	21	9,160	791	1,224	64.6	7.5	436.2	79	29	144.0	6.5	2.4
25	Luke McCown L. McCown	21	8,255	655	1,048	62.5	7.9	393.1	61	30	142.1	5.8	2.9