Tim Duncan won 19 times versus Paul Pierce before 2014-15.

Interpreted as:

duncan regular-season wins against pierce before 2015

	NAME	DATE	W	TM		OPP	MIN	PTS	REB	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Tim Duncan T. Duncan	11/24/1999	1	SAS	@	BOS	37	31	15	4	1	2	12	17	70.6	0	0		7	7	100.0	77.2	3	12	2	2	+37
2	Tim Duncan T. Duncan	2/23/2001	1	SAS	vs	BOS	37	18	10	6	0	3	6	11	54.5	0	0		6	6	100.0	66.0	3	7	2	1	+11
3	Tim Duncan T. Duncan	3/21/2001	1	SAS	@	BOS	42	15	14	3	3	1	5	11	45.5	0	0		5	12	41.7	46.1	0	14	2	3	+18
4	Tim Duncan T. Duncan	1/9/2002	1	SAS	@	BOS	47	25	12	4	1	2	6	13	46.2	0	0		13	16	81.3	62.4	3	9	4	3	+6
5	Tim Duncan T. Duncan	3/16/2002	1	SAS	vs	BOS	45	37	10	1	2	1	12	19	63.2	0	0		13	17	76.5	69.9	2	8	4	3	+1
6	Tim Duncan T. Duncan	1/12/2003	1	SAS	vs	BOS	38	21	9	3	1	5	7	16	43.8	0	0		7	13	53.8	48.3	4	5	2	4	+7
7	Tim Duncan T. Duncan	3/9/2003	1	SAS	@	BOS	32	18	8	6	1	0	8	11	72.7	0	0		2	5	40.0	68.2	2	6	3	2	+28
8	Tim Duncan T. Duncan	1/18/2004	1	SAS	@	BOS	36	15	7	2	1	2	6	15	40.0	0	0		3	6	50.0	42.5	2	5	1	0	+24
9	Tim Duncan T. Duncan	3/20/2004	1	SAS	vs	BOS	32	26	15	2	1	2	10	13	76.9	0	0		6	6	100.0	83.1	3	12	3	1	+15
10	Tim Duncan T. Duncan	11/19/2004	1	SAS	@	BOS	36	26	6	3	2	3	8	13	61.5	0	0		10	13	76.9	69.4	1	5	1	2	+2
11	Tim Duncan T. Duncan	12/26/2004	1	SAS	vs	BOS	33	14	11	4	2	2	6	13	46.2	0	0		2	4	50.0	47.4	3	8	1	3	+7
12	Tim Duncan T. Duncan	11/11/2005	1	SAS	@	BOS	31	29	12	3	1	2	11	17	64.7	1	2	50.0	6	6	100.0	73.8	0	12	1	2	+29
13	Tim Duncan T. Duncan	12/9/2005	1	SAS	vs	BOS	37	20	11	3	2	5	7	11	63.6	0	0		6	8	75.0	68.9	2	9	3	1	+17
14	Tim Duncan T. Duncan	3/17/2007	0	SAS	vs	BOS	40	20	16	3	2	7	6	14	42.9	0	0		8	14	57.1	49.6	4	12	4	3	-6
15	Tim Duncan T. Duncan	2/10/2008	0	SAS	@	BOS	40	22	14	6	1	2	10	20	50.0	0	0		2	4	50.0	50.6	6	8	3	3	+1
16	Tim Duncan T. Duncan	3/17/2008	0	SAS	vs	BOS	34	10	8	2	0	3	4	8	50.0	0	0		2	2	100.0	56.3	1	7	2	3	-6
17	Tim Duncan T. Duncan	2/8/2009	1	SAS	@	BOS	39	23	13	5	0	1	9	16	56.3	0	0		5	5	100.0	63.2	3	10	2	2	+1
18	Tim Duncan T. Duncan	3/20/2009	0	SAS	vs	BOS	32	15	9	3	0	1	6	15	40.0	0	0		3	4	75.0	44.7	1	8	2	1	-9
19	Tim Duncan T. Duncan	12/3/2009	0	SAS	vs	BOS	32	16	15	2	1	2	8	17	47.1	0	0		0	2	0.0	44.7	7	8	6	1	-10
20	Tim Duncan T. Duncan	3/28/2010	1	SAS	@	BOS	27	8	9	2	0	1	4	8	50.0	0	0		0	0		50.0	0	9	3	1	+10
21	Tim Duncan T. Duncan	1/5/2011	0	SAS	@	BOS	32	18	5	1	0	2	8	15	53.3	0	0		2	2	100.0	56.7	3	2	1	1	-6
22	Tim Duncan T. Duncan	3/31/2011	0	SAS	vs	BOS	33	20	13	3	1	2	8	12	66.7	0	1	0.0	4	5	80.0	70.4	2	11	5	1	-4
23	Tim Duncan T. Duncan	4/4/2012	1	SAS	@	BOS	34	10	16	1	1	3	4	12	33.3	0	0		2	4	50.0	36.3	4	12	2	1	+7
24	Tim Duncan T. Duncan	11/21/2012	1	SAS	@	BOS	33	20	15	4	0	0	7	12	58.3	0	0		6	9	66.7	62.7	3	12	4	2	-3
25	Tim Duncan T. Duncan	12/15/2012	1	SAS	vs	BOS	31	5	12	2	1	2	2	13	15.4	0	0		1	2	50.0	18.0	3	9	2	0	+18
	Average		0.7				35.2	19.1	11.2	3.0	1.0	2.2	7.2	13.6	53.0	0.0	0.1	33.3	4.7	6.7	70.1	57.8	2.5	8.7	2.5	1.8	8.4
	Total		19				915	497	290	79	26	56	187	353	53.0	1	3	33.3	122	174	70.1	57.8	65	225	66	46	+218