how many games did nolan ryan allow exactly 2 earned runs

Nolan Ryan was on the mound in 144 games when allowing exactly 2 earned runs.

Interpreted as:

How many regular-season games did Nolan Ryan allow exactly 2 earned runs?

	NAME	DATE	G	ER	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Nolan Ryan N. Ryan	4/19/1968	1	2	NYM	vs	LAD	L	1	2.45	11	0	0	0	7.1	6	2	1	4	0	0	0	30	0
2	Nolan Ryan N. Ryan	5/14/1968	1	2	NYM	vs	CIN	W	1	2.00	14	1	0	0	9.0	4	2	2	2	0	0	0	34	1
3	Nolan Ryan N. Ryan	7/29/1968	1	2	NYM	vs	STL	L	1	2.35	7	0	0	0	7.2	3	2	0	4	0	0	0	29	1
4	Nolan Ryan N. Ryan	7/6/1969	1	2	NYM	@	PIT		0	27.00	0	0	0	0	0.2	0	2	0	3	0	0	0	5	0
5	Nolan Ryan N. Ryan	10/1/1969	1	2	NYM	@	CHC		0	13.50	1	0	0	0	1.1	1	2	0	2	0	0	0	7	0
6	Nolan Ryan N. Ryan	8/9/1970	1	2	NYM	@	PIT	L	1	3.00	10	0	0	0	6.0	3	4	0	7	0	0	0	29	2
7	Nolan Ryan N. Ryan	9/9/1970	1	2	NYM	vs	PHI		1	2.25	13	0	0	0	8.0	6	2	1	2	0	0	0	30	0
8	Nolan Ryan N. Ryan	4/25/1971	1	2	NYM	@	CHC		0	13.50	0	0	0	0	1.1	3	2	0	1	0	0	0	8	0
9	Nolan Ryan N. Ryan	6/5/1971	1	2	NYM	@	LAD	L	1	3.86	4	0	0	0	4.2	6	2	0	2	0	0	0	22	1
10	Nolan Ryan N. Ryan	6/15/1971	1	2	NYM	vs	LAD	L	1	2.25	9	0	0	0	8.0	5	2	0	2	0	0	0	31	0
11	Nolan Ryan N. Ryan	7/5/1971	1	2	NYM	vs	MON	L	1	2.35	5	0	0	0	7.2	3	2	0	4	1	0	0	31	0
12	Nolan Ryan N. Ryan	7/16/1971	1	2	NYM	@	HOU	L	1	13.50	2	0	0	0	1.1	3	4	0	4	0	0	0	12	0
13	Nolan Ryan N. Ryan	9/23/1971	1	2	NYM	@	CHC	W	1	2.25	5	0	0	0	8.0	7	4	0	6	1	0	1	39	1
14	Nolan Ryan N. Ryan	5/15/1972	1	2	CAL	vs	OAK	L	1	4.91	3	0	0	0	3.2	2	2	1	3	1	0	0	16	0
15	Nolan Ryan N. Ryan	6/14/1972	1	2	CAL	vs	CLE	W	1	2.45	7	0	0	0	7.1	7	2	0	5	1	0	0	34	1
16	Nolan Ryan N. Ryan	8/4/1972	1	2	CAL	@	KCR		1	3.00	8	0	0	0	6.0	5	3	0	5	0	0	1	27	0
17	Nolan Ryan N. Ryan	8/18/1972	1	2	CAL	@	DET	L	1	2.57	5	0	0	0	7.0	6	2	0	5	1	0	1	31	0
18	Nolan Ryan N. Ryan	9/12/1972	1	2	CAL	vs	TEX	L	1	2.00	15	1	0	0	9.0	6	3	0	3	1	0	0	35	2
19	Nolan Ryan N. Ryan	9/21/1972	1	2	CAL	vs	KCR	W	1	2.00	4	1	0	0	9.0	4	2	0	7	0	0	0	37	1
20	Nolan Ryan N. Ryan	9/30/1972	1	2	CAL	vs	MIN	W	1	2.00	17	1	0	0	9.0	5	2	0	3	0	0	0	35	0
21	Nolan Ryan N. Ryan	4/6/1973	1	2	CAL	vs	KCR	W	1	2.00	12	1	0	0	9.0	6	2	0	4	0	0	0	34	0
22	Nolan Ryan N. Ryan	4/18/1973	1	2	CAL	@	MIN	W	1	2.00	14	1	0	0	9.0	5	2	1	5	0	0	0	35	0
23	Nolan Ryan N. Ryan	4/22/1973	1	2	CAL	@	OAK		1	2.08	9	0	0	0	8.2	10	2	1	4	0	0	1	39	0
24	Nolan Ryan N. Ryan	5/29/1973	1	2	CAL	@	BOS	L	1	2.25	10	1	0	0	8.0	5	2	1	5	0	0	0	34	0
25	Nolan Ryan N. Ryan	6/2/1973	1	2	CAL	@	NYY	L	1	2.25	6	1	0	0	8.0	7	2	0	3	0	0	0	31	0
	Total		144	288					139	2.52	1,153	46	0	0	1029.0	715	334	55	493	27	2	13	4,244	49