Full Breakdown
Mariners Edge Cubs with Leo Rivas Walk-Off
8/23/2026, 2:24:50 AM
Game-Winning Play
On August 21, 2026, the Seattle Mariners defeated the Chicago Cubs 6–5 in the tenth inning at T-Mobile Park. With two outs and Randy Arozarena on third, backup infielder Leo Rivas singled to center off Cubs reliever Ryan Zeferjahn, driving in the winning run. The Mariners had taken a 5–3 lead in the fifth, but the Cubs rallied with solo homers by Ian Happ and Alex Bregman to force extra innings.
Background & Context
The game opened a three-game interleague series. Seattle entered 61-68, four games behind the AL West leader and three back in the wild-card race. Chicago, at 74-55, held a five-game NL wild-card lead that shrank after the loss. Earlier in the season the Cubs were 1-for-16 with runners in scoring position and left 11 men on base, a pattern that reappeared.
Both clubs arrived with high expectations for 2026. The Mariners have seen their starter fWAR drop sharply in the second half, while the Cubs’ recent offensive inefficiency has threatened their wild-card positioning.
Data & Statistics
- Leo Rivas – walk-off single (2-out, 0-1 sweeper)
- Alex Bregman – two homers (including the ninth-inning tie-breaker)
- Pete Crow-Armstrong – leadoff homer (32nd of the season)
- Cubs: 1-for-16 with RISP; 11 left on base; four home runs (three solo)
- Matthew Boyd (Cubs starter) – 6 IP, 5 R (4 ER), 6 H, 3 K, 2 BB
- Emerson Hancock (Mariners starter) – 5 2/3 IP, 3 R, 8 H, 6 K, 0 BB
- Seranthony Domínguez (Mariners reliever) – scoreless 10th inning
The win was Seattle’s fourth in six games and kept the club four games back in the AL West.
Impact on Playoff Race
Seattle’s triumph preserved its three-game gap in the AL West and maintained a four-game distance from the wild-card lead. Chicago’s loss dropped the Cubs to 19-14 in one-run games and 11-7 in extra-innings contests, widening the NL Central gap to the Brewers and trimming the Cubs’ lead over the Phillies for the top wild-card to three games.
Official Statements & Responses
Mariners manager Dan Wilson highlighted the upcoming rookie start, saying the team hopes Kade Anderson can “create a different continuity” as the season’s final stretch unfolds. Cubs manager Craig Counsell called the balk that advanced Brock Rodden “unfortunate” and defended his protest, insisting the call “wasn’t a balk.”
Verbatim Quotes
- “Where we’re at with this season, and how we feel like this last month-plus of baseball shapes up, and I think Kade is a guy that can really help us in that department,” — Dan Wilson, Mariners manager
- “It hasn’t been called a balk, and he hasn’t been called for a balk in seven years, one where it wasn’t a pickoff move” — Craig Counsell, Cubs manager
- “We battled offensively, had a lot of traffic, but at the end of the day didn’t do enough tonight,” — Alex Bregman
- “I was out for like two months (with vertigo),” — Leo Rivas
What’s Next
The series continues on August 22, 2026 with Seattle’s top prospect Kade Anderson making his MLB debut against Cubs left-hander David Peterson. Anderson entered the season with a 10-1 record and a 1.06 ERA at Double-A Arkansas. Peterson has posted a 2.06 ERA over his last seven outings. Both clubs view the matchup as pivotal for their playoff pushes.
