Player stats

Opponents' MLBDB Expected Slugging Percentage 2021

Estimated bases from hits per at-bat. Singles count once, doubles twice, triples three times and home runs four times. For pitchers, these are opponents' results. MLBDB estimates describe recorded contact, not future performance.

Season

At least 100 balls with recorded speed and angle. MLBDB estimates from recorded ball speed and angle. Every contact contribution needed by the statistic must be available. Missing or unsupported inputs remain N/A. These describe recorded contact, not future performance. Data through December 31, 2021. Data refreshed Sep 13, 2026, 2:31 PM UTC.

No. 1 / Opponents' MLBDB Expected Slugging Percentage / 2021

Jacob deGrom

NYM

.253

Season leader, lower is better

Opponents' MLBDB Expected Slugging Percentage2021 season, lower is better
#	Player	Team	Model balls	Measured%	MLBDB xSLG
1	J. deGromJacob deGrom	NYM	166	100.0%	.253
2	A. AdamsAustin Adams	SD	106	100.0%	.262
3	E. DíazEdwin Díaz	NYM	136	100.0%	.268
4	K. JansenKenley Jansen	LAD	153	100.0%	.273
5	B. TreinenBlake Treinen	LAD	173	100.0%	.274
6	D. WilliamsDevin Williams	MIL	109	100.0%	.279
7	T. MatzekTyler Matzek	ATL	148	100.0%	.284
8	C. HolmesClay Holmes	NYY	181	100.0%	.293
9	F. PeraltaFreddy Peralta	MIL	318	100.0%	.296
10	J. RomanoJordan Romano	TOR	142	100.0%	.297
11	D. BednarDavid Bednar	PIT	140	100.0%	.304
12	A. LoupAaron Loup	NYM	141	100.0%	.305
13	J. AlvaradoJosé Alvarado	PHI	129	100.0%	.307
14	P. FairbanksPete Fairbanks	TB	111	100.0%	.309
15	J. KellyJoe Kelly	LAD	113	100.0%	.311
16	L. McCullers Jr.Lance McCullers Jr.	HOU	413	100.0%	.313
17	C. RodónCarlos Rodón	CWS	304	100.0%	.314
18	A. ReyesAlex Reyes	STL	168	100.0%	.314
19	T. MayzaTim Mayza	TOR	138	100.0%	.317
20	G. CrochetGarrett Crochet	CWS	136	100.0%	.318
21	D. CastilloDiego Castillo	SEA	136	100.0%	.319
22	L. GilbreathLucas Gilbreath	COL	117	100.0%	.321
23	A. OttavinoAdam Ottavino	BOS	163	100.0%	.322
24	A. MinterA.J. Minter	ATL	142	100.0%	.323
25	A. ManoahAlek Manoah	TOR	276	100.0%	.324
26	S. TurnbullSpencer Turnbull	DET	140	100.0%	.326
27	H. NerisHéctor Neris	PHI	176	100.0%	.326
28	K. GravemanKendall Graveman	HOU	133	100.0%	.327
29	R. PresslyRyan Pressly	HOU	156	100.0%	.327
30	S. PattonSpencer Patton	TEX	109	100.0%	.327
31	M. BarnesMatt Barnes	BOS	116	100.0%	.328
32	M. WislerMatt Wisler	TB	121	100.0%	.330
33	G. SotoGregory Soto	DET	159	100.0%	.332
34	J. JiménezJoe Jiménez	DET	110	100.0%	.332
35	R. MonteroRafael Montero	HOU	161	100.0%	.332
36	C. BrogdonConnor Brogdon	PHI	166	100.0%	.334
37	G. WhitlockGarrett Whitlock	BOS	197	100.0%	.335
38	R. IglesiasRaisel Iglesias	LAA	157	100.0%	.335
39	J. KingJohn King	TEX	137	100.0%	.336
40	C. SulserCole Sulser	BAL	161	100.0%	.338
41	T. GonsolinTony Gonsolin	LAD	140	100.0%	.339
42	T. HouckTanner Houck	BOS	171	100.0%	.339
43	S. HowardSam Howard	PIT	104	100.0%	.342
44	J. AlvarezJose Alvarez	SF	204	100.0%	.343
45	G. GallegosGiovanny Gallegos	STL	189	100.0%	.343
46	D. LeoneDominic Leone	SF	144	99.3%	.346
47	T. RogersTrevor Rogers	MIA	341	100.0%	.346
48	P. MatonPhil Maton	HOU	174	100.0%	.346
49	S. OhtaniShohei Ohtani	LAA	323	100.0%	.347
50	T. MayTrevor May	NYM	159	100.0%	.349

MLBDB xSLG: Estimated bases from hits per at-bat. Singles count once, doubles twice, triples three times and home runs four times. For pitchers, these are opponents' results. MLBDB estimates describe recorded contact, not future performance.

Understanding Opponents' MLBDB Expected Slugging Percentage

Formula: Estimated total bases in at-bats ÷ at-bats

Read rates alongside playing time. A small sample can produce an extreme result, and a missing value is different from zero.

Season rankings use regular-season records. A player has one combined row across teams; the team label identifies the associated team, not a separate team stint.

Source: MLB statistics and MLBDB derived measures. Formulas describe the measure above. Data refreshed Sep 13, 2026, 2:31 PM UTC.