Mark Leiter

#38 Active

RP ● Las Vegas Athletics ● 6'0" · 210 lbs ● Bats: R · Throws: R ● N.J.I.T.

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Season SV

Season ERA

4.28

Season WHIP

1.31

Season K

Season HLD

Next Matchup vs PIT Fri 10:05 PM ET · SP: J. Locke

DFS Last 5

Game Log

2026 Regular Season

DATE	OPPONENT	DEC	IP	H	R	ER	HR	BB	SO	ERA	WHIP	PC	RESULT
Jul 18	vs. Washington Nationals		1.0	1	0	0	0	1	2	4.28	1.28	31	W 0-14
Jul 12	@ Chicago White Sox		1.0	0	0	0	0	0	1	4.41	1.26	7	L 1-9
Jul 9	@ Detroit Tigers		1.0	1	0	0	0	0	2	4.55	1.29	19	L 1-4
Jul 3	vs. Miami Marlins		1.0	0	0	0	0	0	2	4.70	1.30	13	L 12-5
Jun 16	vs. Pittsburgh Pirates		1.0	1	0	0	0	0	0	4.85	1.35	9	L 6-5
Jun 13	vs. Colorado Rockies	HLD	1.0	1	0	0	0	0	1	5.02	1.36	13	W 5-7
Jun 8	vs. Milwaukee Brewers	HLD	0.1	1	1	1	0	2	1	5.20	1.37	23	L 15-14
Jun 7	@ Houston Astros		1.0	0	0	0	0	0	2	4.94	1.28	16	W 5-0
Jun 4	@ Chicago Cubs	HLD	1.0	0	0	0	0	0	2	5.13	1.33	16	L 6-7
Jun 3	@ Chicago Cubs		0.2	0	0	0	0	0	0	5.33	1.38	4	W 5-4
May 31	vs. New York Yankees		1.0	0	0	0	0	1	0	5.47	1.42	10	L 13-8
May 29	vs. New York Yankees		1.0	1	0	0	0	0	1	5.70	1.44	17	L 8-2
May 24	@ San Diego Padres	HLD	1.0	0	0	0	0	1	0	5.96	1.46	13	W 5-2
May 21	@ Los Angeles Angels	SV	1.0	1	0	0	0	0	1	6.23	1.48	11	W 3-2
May 20	@ Los Angeles Angels		1.0	0	0	0	0	0	1	6.53	1.50	11	W 6-5
May 16	vs. San Francisco Giants		2.0	2	0	0	0	0	2	6.86	1.58	25	L 6-4
May 14	vs. St. Louis Cardinals		1.0	0	0	0	0	0	2	7.64	1.64	15	L 5-4
May 12	vs. St. Louis Cardinals		1.0	0	0	0	0	0	1	8.10	1.74	12	L 6-4
May 9	@ Baltimore Orioles		1.0	3	2	2	0	0	1	8.62	1.85	19	W 6-2
May 5	@ Philadelphia Phillies		0.2	3	4	4	0	1	1	7.98	1.77	22	L 1-9
May 3	vs. Cleveland Guardians		1.0	0	0	0	0	0	1	5.79	1.57	10	W 1-7
Apr 29	vs. Kansas City Royals	SV	0.1	0	0	0	0	1	1	6.23	1.69	11	W 2-5
Apr 28	vs. Kansas City Royals		1.0	0	0	0	0	0	1	6.39	1.66	9	L 4-1
Apr 25	@ Texas Rangers		1.0	0	0	0	0	0	1	6.94	1.80	13	L 3-4
Apr 22	@ Seattle Mariners		1.0	2	1	1	0	0	1	7.59	1.97	18	L 4-5
Apr 20	@ Seattle Mariners	HLD	1.0	2	0	0	0	0	1	7.45	1.97	19	W 6-4
Apr 18	vs. Chicago White Sox		0.2	0	0	0	0	2	1	8.31	1.96	12	W 6-7
Apr 15	vs. Texas Rangers		0.2	2	3	3	1	1	1	9.00	1.88	22	W 5-6
Apr 14	vs. Texas Rangers	SV	1.0	0	0	0	0	0	2	6.14	1.64	13	W 1-2
Apr 11	@ New York Mets		1.0	0	0	0	0	0	3	7.11	1.89	14	W 11-6
Apr 10	@ New York Mets		1.0	1	0	0	0	0	1	8.44	2.25	12	W 4-0
Apr 7	@ New York Yankees	L	0.2	4	4	4	1	0	0	10.38	2.54	28	L 3-5
Apr 5	vs. Houston Astros	BS	1.0	1	0	0	0	1	0	2.45	1.91	26	W 10-12
Mar 31	@ Atlanta Braves	SV	1.0	2	0	0	0	0	1	3.38	1.88	13	W 5-2
Mar 30	@ Atlanta Braves		1.0	1	0	0	0	0	0	5.40	1.80	8	L 0-4
Mar 28	@ Toronto Blue Jays		0.2	2	1	1	0	0	0	13.50	3.00	17	L 7-8
No games against that opponent.
Total		0-1	33.2	32	16	16	2	11	38	4.28	1.28	551
Total	2 games	0-0	2.0	3	0	0	0	0	1	0.00	1.50	21
Total	1 game	0-0	1.0	3	2	2	0	0	1	18.00	3.00	19
Total	2 games	0-0	1.2	0	0	0	0	0	2	0.00	0.00	20
Total	2 games	0-0	1.2	0	0	0	0	2	2	0.00	1.20	19
Total	1 game	0-0	1.0	0	0	0	0	0	1	0.00	0.00	10
Total	1 game	0-0	1.0	1	0	0	0	0	1	0.00	1.00	13
Total	1 game	0-0	1.0	1	0	0	0	0	2	0.00	1.00	19
Total	2 games	0-0	2.0	1	0	0	0	1	2	0.00	1.00	42
Total	2 games	0-0	1.1	0	0	0	0	1	2	0.00	0.75	20
Total	2 games	0-0	2.0	1	0	0	0	0	2	0.00	0.50	22
Total	1 game	0-0	1.0	0	0	0	0	0	2	0.00	0.00	13
Total	1 game	0-0	0.1	1	1	1	0	2	1	27.00	9.00	23
Total	2 games	0-0	2.0	1	0	0	0	0	4	0.00	0.50	26
Total	3 games	0-1	2.2	5	4	4	1	1	1	13.50	2.25	55
Total	1 game	0-0	0.2	3	4	4	0	1	1	54.00	6.00	22
Total	1 game	0-0	1.0	1	0	0	0	0	0	0.00	1.00	9
Total	1 game	0-0	1.0	0	0	0	0	1	0	0.00	1.00	13
Total	1 game	0-0	2.0	2	0	0	0	0	2	0.00	1.00	25
Total	2 games	0-0	2.0	4	1	1	0	0	2	4.50	2.00	37
Total	2 games	0-0	2.0	0	0	0	0	0	3	0.00	0.00	27
Total	3 games	0-0	2.2	2	3	3	1	1	4	10.13	1.13	48
Total	1 game	0-0	0.2	2	1	1	0	0	0	13.50	3.00	17
Total	1 game	0-0	1.0	1	0	0	0	1	2	0.00	2.00	31

AVG, OBP, SLG, ERA and WHIP are season-to-date through each game, not that game alone — so the column reads as a trend and its last value is the season figure. They stay season-to-date when the log is filtered by opponent; the figure for the filtered games is the one in the Total row. The second game of a doubleheader is marked (2).