3 Reasons for the Seattle Mariners Summer Surge

Seattle Mariners v Houston Astros
Seattle Mariners v Houston Astros / Bob Levey/GettyImages
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Reason #2 The Mariners Bullpen

Matt Brash
San Diego Padres v Seattle Mariners / Alika Jenner/GettyImages

Despite trading their closer Paul Sewald prior to the trade deadline, and some recent struggles, the Mariners bullpen has been superb in the second half of the season. Since the All-Star break, the Mariners relievers have posted an ERA of 2.53 and a (12-6) record. In the first half of the season the Mariners bullpen had an ERA of 3.73 along with a (14-15) record. The M's bullpen came up big on Sunday as Trent Thornton, Matt Brash, Justin Topa, Andres Munoz, and Gabe Speier each threw at least one scoreless inning. Helping rescue starting pitcher Emerson Hancock who left after throwing two scoreless innings with a lat injury.

Here are some of the top performers in the M's bullpen in the Second Half:

Matt Brash has posted a 2.95 ERA and a (5-1) record after going (4-3) with a 3.50 ERA in the first half of the season (he also earning the win in Sunday's game). He has been the most used Mariners reliever this season with 62 appearances this year. Brash has been indispensable for the M's, as they frequently use him in high leverage situations such as Sunday where he came in with Seattle holding a two-run lead.

One of the best Mariners relievers for the second half of the 2023 season has been Justin Topa. A surprise success story who has posted an impressive 0.55 ERA in 16.1 IP since the All-Star break. The Mariners have also used him in high leverage situations, but have only used him sparingly in closing opportunities.

Andres Munoz has done an admirable job filling in as the Mariners most frequent closer in save opportunities. After battling injuries for the majority of the first half of the season, the return of Andres Munoz has been a welcome sign. Posting a 2.45 ERA and collecting six saves since after the All-Star break.

Gabe Speier closed out Sunday's game collecting his first career save against the Astros. Helping the Mariners complete a three-game sweep of Houston. Speier has been incredibly effective this season with a 1.29 ERA in 14 IP since the break.