Rafael Devers was the youngest for the Red Sox in 2018. He was 21 years old.

	NAME	AGE	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Rafael Devers R. Devers	21	2018	BOS	121	450	59	108	24	0	21	66	38	0	121	5	2	490	195	45	0	2	6	9	.240	.298	.433	.731	55	-1.9	.310	91	-5.5
2	Andrew Benintendi A. Benintendi	23	2018	BOS	148	579	103	168	41	6	16	87	71	2	106	21	3	661	269	63	2	7	1	9	.290	.366	.465	.830	100	23	.357	123	18.1
3	Jalen Beeks J. Beeks	24	2018	BOS
4	Tzu-Wei Lin T. Lin	24	2018	BOS	37	65	15	16	6	1	1	6	8	0	17	0	1	73	27	8	0	0	0	0	.246	.329	.415	.744	9	0.5	.324	100	0
5	Sam Travis S. Travis	24	2018	BOS	19	36	5	8	3	0	1	7	2	0	10	0	0	38	14	4	0	0	0	1	.222	.263	.389	.652	3	-1.1	.281	71	-1.3
6	Mookie Betts M. Betts	25	2018	BOS	136	520	129	180	47	5	32	80	81	8	91	30	6	614	333	84	0	5	8	5	.346	.438	.640	1.078	139	67.2	.449	185	62.7
7	Xander Bogaerts X. Bogaerts	25	2018	BOS	136	513	72	148	45	3	23	103	55	6	102	8	2	580	268	71	0	6	4	14	.288	.360	.522	.883	95	27.5	.373	134	23.3
8	Eduardo Rodriguez E. Rodriguez	25	2018	BOS	1	2	0	0	0	0	0	0	0	0	1	0	0	2	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.5	.000	-121	-0.5
9	Bobby Poyner B. Poyner	25	2018	BOS	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
10	Blake Swihart B. Swihart	26	2018	BOS	82	192	28	44	10	0	3	18	15	0	57	6	1	207	63	13	0	0	0	4	.229	.285	.328	.613	17	-7.3	.271	64	-8.8
11	William Cuevas W. Cuevas	27	2018	BOS	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
12	Justin Haley J. Haley	27	2018	BOS
13	Brian Johnson B. Johnson	27	2018	BOS	2	4	1	1	0	0	0	0	0	0	1	0	0	4	1	0	0	0	0	0	.250	.250	.250	.500	0	-0.3	.220	29	-0.3
14	Tony Renda T. Renda	27	2018	BOS	1	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
15	Christian Vázquez C. Vázquez	27	2018	BOS	80	251	24	52	10	0	3	16	13	4	41	4	1	269	71	13	1	0	1	5	.207	.257	.283	.540	15	-16.4	.240	43	-18.4
16	Matt Barnes M. Barnes	28	2018	BOS	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
17	Jackie Bradley Jr. J. Bradley Jr.	28	2018	BOS	144	474	76	111	33	4	13	59	46	11	137	17	1	535	191	50	0	4	3	6	.234	.314	.403	.717	61	-1.9	.310	91	-5.9
18	Nathan Eovaldi N. Eovaldi	28	2018	BOS	2	2	1	0	0	0	0	0	1	0	2	0	0	3	0	0	0	0	0	0	.000	.333	.000	.333	0	-0.2	.230	36	-0.2
19	Robby Scott R. Scott	28	2018	BOS	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
20	Carson Smith C. Smith	28	2018	BOS	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
21	Heath Hembree H. Hembree	29	2018	BOS	6	1	0	0	0	0	0	0	0	0	1	0	0	1	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.3	.000	-121	-0.3
22	Sandy León S. León	29	2018	BOS	89	265	30	47	12	0	5	22	15	4	75	1	0	288	74	17	3	1	0	6	.177	.232	.279	.511	13	-20.6	.227	34	-22.7
23	Drew Pomeranz D. Pomeranz	29	2018	BOS	3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
24	Rick Porcello R. Porcello	29	2018	BOS	3	7	1	3	2	0	0	3	0	0	3	0	0	7	5	2	0	0	0	0	.429	.429	.714	1.143	2	1	.482	208	0.9
25	Chris Sale C. Sale	29	2018	BOS	1	2	0	0	0	0	0	0	0	0	2	0	0	2	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.5	.000	-121	-0.5