Opponents running wild against Miami Marlins. Plus what Archie Bradley brings to bullpen

The Miami Marlins defense has a stolen base issue this season.

And it’s near the point of MLB-history bad unless things change.

After allowing the Seattle Mariners to going 3 for 3 on stolen base attempts in an 8-1 loss on Tuesday, the Marlins have now allowed baserunners to successfully steal bases on 66 of 73 attempts — a 90.41-percent success rate by the opposition.

It’s the second-highest rate in MLB this season, narrowly behind the Los Angeles Dodgers (90.43 percent, 85 stolen bases allowed in 94 attempts against). The league average this season is 79.5 percent

The MLB record for highest stolen base percentage allowed by a pitching staff over a full season is 90.43 percent by the 2007 San Diego Padres. The previous high in Marlins franchise history came in the 2011 season, when the Florida Marlins allowed baserunners to successfully steal bases at an 81.1-percent clip.

Tuesday marked the sixth time this season the Marlins have allowed opponents to steal at least three bases in a game. Miami is one of four teams in MLB that has given up multiple stolen bases in at least 18 games this season; the others: The Dodgers (22), Toronto Blue Jays (18) and Chicago White Sox (18).

And even more, Miami is one of five teams with multiple pitchers who have allowed double-digit stolen bases. The full group:

▪ Sandy Alcantara (11) and Edward Cabrera (10) for the Marlins.

▪ Michael Kopech (14) and Mike Clevinger (13) for the White Sox.

▪ Noah Syndergaard (20) and Phil Bickford (10) for the Dodgers.

▪ Alek Manoah (12) and Kevin Gausman (11) for the Toronto Blue Jays.

▪ Roansy Contreras (12) and Rich Hill (11) for the Pittsburgh Pirates.

All three stolen bases by the Mariners on Tuesday came with Cabrera on the mound.

“The times they stole, he’s 1.5s, 1.6s, so they’re just waiting for the high leg kick,” Marlins manager Skip Schumaker said. “There’s only so much you can do as far as the quick pitch and without giving up too much of your mechanics and velo and that type of stuff. He’s working on it. I think when he has to make a pitch is when you get the big leg kick or maybe the game speeds up a little bit too much and he gets the big leg kick again, just from habit. There’s only so many times you can pick, and they know that, and so you have to get better times with the new rules to limit the stolen bases.”

Archie Bradley’s role

The Marlins on Tuesday added veteran reliever Archie Bradley to the active roster and optioned struggling reliever Huascar Brazoban to Triple A Jacksonville.

Bradley, 30, has been with the Marlins organization since April 11 when he signed a minor-league deal shortly after the season began. After a brief tune-up at the Marlins’ spring training complex in Jupiter, Bradley spent a month with Triple A Jacksonville before being added to Miami’s roster.

He made his season debut shortly after being called up, pitching a scoreless fifth inning before allowing all four batters he faced in the sixth to reach base — two walks, a single and a bases-clearing triple to extend Miami’s deficit to 8-1.

Schumaker said Bradley, who has experience as a closer with 32 career saves, will likely start out in lower leverage and multi-inning roles before the seeing if he can join the likes of A.J. Puk, Dylan Floro and Tanner Scott in the reliever rotation for higher-leverage situations.

Bradley had a career 3.92 ERA over eight MLB seasons spent with the Arizona Diamondbacks (2015-2020), Cincinnati Reds (2020), Philadelphia Phillies (2021) and Los Angeles Angels (2022).

This and that

▪ The Marlins have issued 55 leadoff walks this season, including three on Tuesday. That’s tied for 5th most in MLB.

▪ Second baseman Luis Arraez has 10 starts this season in which he has failed to record a hit, including each of the first two games against the Mariners. Miami is 4-6 in those 10 games.