MLB · Pirates · RP

Isaac Mattson under 0.5 walks allowed this season

Isaac Mattson has gone under 0.5 walks allowed in 24 of 38 games this season (63%) — 18 walks allowed in that span.

2026 season38 gamesReference line0.5

under 0.5 walks allowed — hit rate by window

2 of 5

40% · 4 total

L10

6 of 10

60% · 5 total

L20

13 of 20

65% · 9 total

SZN · 2026

24 of 38

63% · 18 total

Home

0.5 avg

13 of 22 under 0.5

Road

0.4 avg

11 of 16 under 0.5

vs MIL

0.5 avg

2 of 4 under 0.5

colored vs under 0.5

Date	Opp	Result	Walks Allowed	K	ER	HA	OUTS
Sep 5	vsLAA	L1-6	0	2	3	4	6
Aug 17	vsDET	L5-8	2	1	1	2	6
Jul 28	vsARI	L7-8	1	3	1	3	5
Jul 25	vsCHC	L0-11	1	1	3	4	1
Jul 19	@CLE	W7-1	0	1	0	0	3
Jul 18	@CLE	W7-1	0	2	0	1	3
Jul 12	vsMIL	W14-5	1	1	0	1	2
Jul 11	vsMIL	W3-2	0	0	0	1	3
Jul 8	vsATL	L0-3	0	1	1	2	3
Jul 5	@WSH	W11-5	0	1	0	2	3
Jul 3	@WSH	L5-9	1	1	4	3	4
Jun 30	@PHI	L0-8	0	0	0	1	2
Jun 27	vsCIN	L7-9	0	2	0	0	3
Jun 26	vsCIN	L4-6	0	1	0	0	3
Jun 23	vsSEA	L2-3	0	1	0	0	3
Jun 17	@OAK	W12-4	0	2	1	1	3
Jun 14	vsMIA	L2-4	2	1	0	0	4
May 17	vsPHI	L0-6	0	0	0	1	3
May 16	vsPHI	L0-6	1	2	0	0	4
May 10	@SF	L6-7	0	0	2	3	1
May 7	@ARI	W4-2	0	1	0	0	1
Apr 30	vsSTL	L5-10	2	0	5	3	2
Apr 27	vsSTL	L2-4	0	1	0	0	1
Apr 25	@MIL	W6-3	0	0	0	0	3
Apr 24	@MIL	W6-0	1	1	0	0	3
Apr 19	vsTB	W6-3	0	1	0	0	3
Apr 18	vsTB	L7-8	0	0	0	0	3
Apr 16	vsWSH	L7-8	1	0	0	0	3
Apr 14	vsWSH	L4-5	0	1	0	2	6
Apr 11	@CHC	W4-3	0	1	0	2	3
Apr 10	@CHC	W2-0	1	0	0	0	3
Apr 7	vsSD	W7-1	0	0	0	1	2
Apr 6	vsSD	L0-5	0	2	0	2	3
Apr 4	vsBAL	W3-2	1	1	0	1	3
Apr 1	@CIN	W8-3	0	0	0	1	4
Mar 30	@CIN	L0-2	1	1	0	0	3
Mar 29	@NYM	W4-3	0	2	0	0	3
Mar 26	@NYM	L7-11	2	1	2	3	2

Opens Isaac Mattson's page with this question loaded — every book's price on it, the chart, tonight's lens.