Seve Ballesteros has the lowest career scoring average per round, with 0.17.

	NAME	SCORING AVG/ROUNDS	SCORING AVG	ROUNDS	EVENTS	TOP 10	WINS	MONEY
1	Seve Ballesteros S. Ballesteros	0.17	71.7	427	52	27	6	$1,547,718
2	Miguel Angel Jimenez M. Angel Jimenez	0.21	71.8	339	60	17		$1,023,040
3	Skeeter Heath S. Heath	0.26	73.1	282	56	1		$68,738
4	Gary Player G. Player	0.26	72.7	279	48	4		$252,962
5	Dale Douglass D. Douglass	0.27	73.2	271	68	1		$52,598
6	Sammy Rachels S. Rachels	0.28	71.6	255	67	9		$183,231
7	Niclas Fasth N. Fasth	0.28	72.1	253	61	8		$285,783
8	Tom Shaw T. Shaw	0.29	73.6	258	55	2		$54,165
9	Ralph Landrum R. Landrum	0.3	73.4	243	85	6		$146,023
10	Wes Short W. Short	0.3	72.3	238	111	2	1	$1,652,656
11	Jeff Sanders J. Sanders	0.33	72.5	217	65	1		$63,199
12	Grier Jones G. Jones	0.35	72.1	207	63	2		$60,653
13	Kermit Zarley K. Zarley	0.38	73.2	195	71			$47,184
14	Bill Murchison B. Murchison	0.38	71.5	190	54			$74,354
15	Jeff Klauk J. Klauk	0.38	70.8	187	105	3	0	$1,601,566
16	Dave Hill D. Hill	0.4	72.3	182	85	1		$64,972
17	Mike Hill M. Hill	0.4	72.5	182	87	1		$41,803
18	Eduardo Romero E. Romero	0.4	72.4	181	74	5		$335,652
19	Tom Jones T. Jones	0.4	71.9	179	51	2		$32,753
20	Joey Snyder J. Snyder	0.42	71.1	168	117	4	0	$1,267,815
21	Bob Proben B. Proben	0.42	72.2	170	80			$48,432
22	R.W. Eaks	0.42	71.8	169	82	2		$287,554
23	Doug Black D. Black	0.43	73.1	170	52	1		$28,483
24	Tommy Nakajima T. Nakajima	0.44	141.8	319	110	9		$555,394
25	Fred Wadsworth F. Wadsworth	0.45	145.5	326	179	3	1	$235,450

StatMuse has season-level data for rounds and scoring average going back to the 1980 season.