Greg Weissert

#57 Active

RP ● Boston Red Sox ● 6'2" · 235 lbs ● Bats: R · Throws: R ● Fordham

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Season SV

Season ERA

3.26

Season WHIP

1.24

Season K

Season HLD

Next Matchup vs STL Mon 1:05 PM ET

DFS Last 5

Game Log

2026 Regular Season

DATE	OPPONENT	DEC	IP	H	R	ER	HR	BB	SO	ERA	WHIP	PC	RESULT
Sep 25	vs. Chicago Cubs	W	1.1	0	0	0	0	2	1	3.45	1.24	22	W 3-4
Sep 18	@ Tampa Bay Rays	HLD	2.0	1	0	0	0	0	1	3.54	1.23	27	W 4-2
Sep 16	@ Texas Rangers		1.1	1	0	0	0	0	1	3.67	1.26	15	L 3-7
Sep 13	vs. Kansas City Royals	HLD	1.0	0	0	0	0	0	1	3.76	1.27	11	W 1-4
Sep 11	vs. Kansas City Royals		0.2	3	0	0	0	0	0	3.83	1.30	18	L 3-2
Sep 8	vs. Los Angeles Angels		1.0	1	0	0	0	0	2	3.88	1.25	16	L 6-1
Sep 5	@ Baltimore Orioles		0.2	0	0	0	0	1	1	3.96	1.26	13	W 5-0
Sep 1	vs. Seattle Mariners		1.0	1	0	0	0	1	1	4.01	1.26	19	L 9-6
Aug 30	@ New York Yankees		0.2	1	0	0	0	0	1	4.10	1.24	15	L 1-16
Aug 28	@ New York Yankees		0.2	0	0	0	0	0	1	4.15	1.24	5	L 0-1
Aug 25	@ Miami Marlins		1.0	1	0	0	0	0	1	4.21	1.26	12	W 7-3
Aug 22	vs. San Francisco Giants		1.0	1	0	0	0	0	2	4.30	1.26	19	W 2-3
Aug 19	vs. Arizona Diamondbacks		1.0	2	2	2	1	1	1	4.40	1.27	31	L 7-6
Aug 17	vs. Arizona Diamondbacks		1.0	1	0	0	0	0	1	4.09	1.23	13	W 1-11
Aug 13	@ Toronto Blue Jays		1.0	0	0	0	0	1	1	4.19	1.23	17	W 7-0
Aug 6	vs. Chicago White Sox		1.0	2	1	1	0	1	3	4.29	1.24	34	W 11-12
Aug 4	vs. Chicago White Sox		0.2	0	0	0	0	1	0	4.17	1.20	14	W 2-14
Aug 2	@ Los Angeles Dodgers		0.1	0	0	0	0	0	0	4.24	1.19	5	W 8-4
Jul 30	@ Las Vegas Athletics		0.2	1	0	0	0	0	0	4.28	1.20	6	W 5-4
Jul 29	@ Las Vegas Athletics		1.0	0	0	0	0	0	2	4.35	1.19	15	W 4-2
Jul 26	vs. Toronto Blue Jays		0.1	0	0	0	0	0	1	4.46	1.23	4	W 1-6
Jul 24	vs. Toronto Blue Jays		0.1	2	3	3	1	0	1	4.50	1.24	10	W 4-6
Jul 11	@ New York Mets		1.0	1	0	0	0	0	2	3.82	1.19	12	W 4-0
Jul 10	@ New York Mets		1.0	1	1	1	1	0	0	3.93	1.20	11	W 6-2
Jul 8	@ Chicago White Sox		1.0	0	0	0	0	0	0	3.79	1.21	10	W 5-0
Jul 5	@ Los Angeles Angels	W	1.1	0	0	0	0	0	2	3.89	1.24	18	W 7-5
Jul 4	@ Los Angeles Angels		1.0	0	0	0	0	1	0	4.05	1.29	12	W 8-1
Jun 30	vs. Washington Nationals	L	1.2	1	2	2	0	1	1	4.18	1.30	28	L 8-1
Jun 25	vs. New York Yankees	HLD	0.2	1	1	1	0	1	0	3.82	1.30	21	W 3-6
Jun 19	@ Seattle Mariners		1.0	0	0	0	0	0	1	3.60	1.27	10	W 6-2
Jun 17	vs. Toronto Blue Jays		1.0	2	1	1	0	0	1	3.72	1.31	20	L 3-0
Jun 16	vs. Toronto Blue Jays		1.0	0	0	0	0	0	0	3.54	1.29	11	L 6-1
Jun 14	vs. Texas Rangers		1.1	1	0	0	0	0	1	3.67	1.33	15	L 6-4
Jun 10	@ Tampa Bay Rays		0.1	0	0	0	0	0	1	3.86	1.36	3	L 5-7
Jun 8	@ Tampa Bay Rays		0.1	1	0	0	0	1	1	3.91	1.38	17	L 1-3
Jun 2	vs. Baltimore Orioles		1.2	0	0	0	0	0	3	3.96	1.32	25	L 4-2
May 31	@ Cleveland Guardians		1.0	1	0	0	0	0	1	4.24	1.41	19	W 9-4
May 28	vs. Atlanta Braves		1.0	1	2	2	1	1	0	4.43	1.43	17	L 10-2
May 26	vs. Atlanta Braves		1.0	1	0	0	0	0	1	3.80	1.41	14	L 7-6
May 24	vs. Minnesota Twins		1.0	1	0	0	0	1	1	3.98	1.43	19	L 6-5
May 22	vs. Minnesota Twins		1.1	1	0	0	0	0	0	4.19	1.40	23	L 8-6
May 20	@ Kansas City Royals	HLD	1.1	1	0	0	0	0	1	4.50	1.44	21	W 4-3
May 15	@ Atlanta Braves		1.1	0	0	0	0	0	0	4.86	1.50	13	L 2-3
May 10	vs. Tampa Bay Rays		0.2	0	0	0	0	1	0	5.28	1.63	10	L 4-1
May 7	vs. Tampa Bay Rays		0.0	2	1	1	0	1	0	5.52	1.64	11	L 8-4
May 6	@ Detroit Tigers		1.0	0	0	0	0	0	0	4.91	1.43	11	W 4-0
May 3	vs. Houston Astros		1.1	3	1	1	0	0	1	5.27	1.54	22	L 3-1
Apr 29	@ Toronto Blue Jays		0.2	2	2	2	1	0	1	5.11	1.46	13	L 1-8
Apr 27	@ Toronto Blue Jays		1.0	1	0	0	0	0	0	3.86	1.37	10	W 5-0
Apr 25	@ Baltimore Orioles		1.0	2	1	0	0	0	1	4.22	1.41	21	W 17-1
Apr 23	vs. New York Yankees	BS	0.1	2	0	0	0	1	1	4.66	1.34	12	L 4-2
Apr 20	vs. Detroit Tigers		1.0	0	0	0	0	0	3	4.82	1.07	10	W 6-8
Apr 18	vs. Detroit Tigers		1.0	1	0	0	0	0	0	5.40	1.20	12	L 4-1
Apr 11	@ St. Louis Cardinals	HLD	0.2	0	0	0	0	1	0	6.14	1.23	16	W 7-1
Apr 10	@ St. Louis Cardinals		1.1	0	0	0	0	0	1	6.75	1.20	18	L 2-3
Apr 8	vs. Milwaukee Brewers	HLD	0.2	1	0	0	0	0	2	8.44	1.50	11	W 0-5
Apr 5	vs. San Diego Padres		1.0	2	2	2	1	0	3	9.64	1.50	18	L 8-6
Apr 3	vs. San Diego Padres	HLD	1.0	0	0	0	0	0	1	7.36	1.36	17	W 2-5
Apr 1	@ Houston Astros		1.0	0	0	0	0	0	1	10.13	1.88	16	L 4-6
Mar 29	@ Cincinnati Reds	L	0.2	1	2	2	1	1	1	16.20	3.00	15	L 2-3
Mar 28	@ Cincinnati Reds		1.0	2	1	1	1	1	2	9.00	3.00	27	L 5-6
No games against that opponent.
Total		2-2	57.1	51	23	22	8	20	58	3.45	1.24	950
Total	2 games	0-0	2.0	3	2	2	1	1	2	9.00	2.00	44
Total	3 games	0-0	3.1	2	2	2	1	1	1	5.40	0.90	44
Total	3 games	0-0	3.1	2	1	0	0	1	5	0.00	0.90	59
Total	1 game	1-0	1.1	0	0	0	0	2	1	0.00	1.50	22
Total	3 games	0-0	2.2	2	1	1	0	2	3	3.38	1.50	58
Total	2 games	0-1	1.2	3	3	3	2	2	3	16.20	3.00	42
Total	1 game	0-0	1.0	1	0	0	0	0	1	0.00	1.00	19
Total	3 games	0-0	3.0	1	0	0	0	0	3	0.00	0.33	33
Total	2 games	0-0	2.1	3	1	1	0	0	2	3.86	1.29	38
Total	3 games	0-0	3.0	4	0	0	0	0	2	0.00	1.33	50
Total	2 games	0-0	1.2	1	0	0	0	0	2	0.00	0.60	21
Total	3 games	1-0	3.1	1	0	0	0	1	4	0.00	0.60	46
Total	1 game	0-0	0.1	0	0	0	0	0	0	0.00	0.00	5
Total	1 game	0-0	1.0	1	0	0	0	0	1	0.00	1.00	12
Total	1 game	0-0	0.2	1	0	0	0	0	2	0.00	1.50	11
Total	2 games	0-0	2.1	2	0	0	0	1	1	0.00	1.29	42
Total	2 games	0-0	2.0	2	1	1	1	0	2	4.50	1.00	23
Total	4 games	0-0	2.1	4	1	1	0	2	3	3.86	2.57	53
Total	2 games	0-0	2.0	2	2	2	1	0	4	9.00	1.00	35
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	29
Total	2 games	0-0	2.0	0	0	0	0	1	1	0.00	0.50	34
Total	5 games	0-0	3.1	4	1	1	0	3	3	2.70	2.10	68
Total	2 games	0-0	2.2	2	0	0	0	0	2	0.00	0.75	30
Total	7 games	0-0	5.1	7	6	6	2	1	5	10.13	1.50	85
Total	1 game	0-1	1.2	1	2	2	0	1	1	10.80	1.20	28

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).