J.D. Martinez: #5 in OPS+ 2014-2017. Not a 1-2 year wonder.

For batters with at least 2,000 plate appearances (PA) for the last four years from baseball-reference.com.

Rk	Player	OPS+	PA	From	To	Age	G	AB	R	H	2B	3B	HR	RBI	BB	IBB	SO	HBP	SH	SF	GDP	SB	CS	BA	OBP	SLG	OPS	Pos	Tm
1	Mike Trout	175	2575	2014	2017	22-25	589	2128	434	641	128	23	139	373	385	47	569	38	0	24	30	79	20	.301	.413	.579	.992	*8/DH	LAA
2	Joey Votto	163	2351	2014	2017	30-33	540	1880	334	587	117	5	100	300	432	52	387	21	0	18	48	25	6	.312	.442	.539	.982	*3/HD	CIN
3	Giancarlo Stanton	154	2118	2014	2017	24-27	497	1828	315	496	95	3	150	378	263	48	568	16	0	10	40	19	5	.271	.366	.573	.939	*9/HD	MIA
4	Paul Goldschmidt	149	2544	2014	2017	26-29	581	2110	401	642	144	9	112	394	386	69	558	19	0	22	54	80	18	.304	.413	.540	.953	*3/DH	ARI
5	J.D. Martinez	149	2143	2014	2017	26-29	520	1929	304	579	124	10	128	350	185	22	560	11	0	18	55	14	7	.300	.362	.574	.936	*9/7DH	DET-ARI
6	Bryce Harper	148	2168	2014	2017	21-24	511	1799	338	525	99	6	108	304	338	50	451	10	3	18	47	33	18	.292	.403	.534	.937	*9/78HD	WSN
7	Nelson Cruz	147	2645	2014	2017	33-36	621	2348	364	673	109	4	166	425	246	29	603	31	0	20	53	10	8	.287	.359	.549	.908	*D9/7H	BAL-SEA
8	Freddie Freeman	147	2396	2014	2017	24-27	555	2052	341	603	148	12	98	306	300	40	509	32	0	12	45	20	11	.294	.390	.521	.911	*3/5HD	ATL
9	Jose Altuve	145	2775	2014	2017	24-27	626	2528	391	845	168	16	70	302	187	29	274	30	8	22	71	156	38	.334	.384	.496	.880	*4/DH6	HOU
10	Josh Donaldson	144	2602	2014	2017	28-31	584	2220	402	615	125	9	140	398	334	12	493	25	4	19	53	23	3	.277	.375	.531	.906	*5/DH6	OAK-TOR
11	Anthony Rizzo	143	2684	2014	2017	24-27	612	2265	376	639	141	11	127	397	316	35	419	85	0	18	51	35	19	.282	.387	.522	.910	*3/4H75	CHC
12	Jose Abreu	142	2660	2014	2017	27-30	614	2414	330	726	144	12	124	410	172	39	515	56	0	18	72	6	3	.301	.359	.524	.883	*3/DH	CHW
13	Kris Bryant	142	2014	2015	2017	23-25	457	1711	319	492	104	12	94	274	247	10	481	42	0	14	18	28	14	.288	.388	.527	.915	*5/7938HD6	CHC
14	Miguel Cabrera	142	2404	2014	2017	31-34	566	2104	307	641	133	3	97	353	266	46	425	13	0	21	81	2	3	.305	.383	.509	.892	*3/D5H	DET
15	Edwin Encarnacion	140	2537	2014	2017	31-34	591	2160	364	575	112	3	153	443	330	19	451	21	0	24	72	9	2	.266	.365	.533	.899	*D3/H7	TOR-CLE

Mad Dog Russo on MLB Network repeated something we hear from many: J.D. Martinez has had only two good seasons. No, J.D. Martinez has been really good in each of the last four seasons.

Yankee general manager Brian Cashman, executive of the year over the guy in Houston according to Baseball America, failed to trade for Josh Donaldson (#10 above and 2015 MVP) when Cashman was looking for a third baseman and instead signed Chase Headley about a month after Donaldson was traded from Oakland to Toronto.

Cashman, with no criticism from Yankee fans or media, also passed on Nelson Cruz (#7) who is three years older than J.D. Martinez, who is considered too old by some.

Cashman, with no criticism from Yankee fans or media, also passed on Edwin Encarnacion (#15) one year ago.

So three of the top 15 hitters of the last four years were not properly valued by the executive of year for 2017. That may be happening again with J.D. Martinez, not by the Yankees who acquired Giancarlo Stanton (#3), but by the other 29 teams.