Not sure why we are hypothesizing, no one subscribes to The Athletic? From July:
"The day after the Dodgers came calling, Ryan Brasier tried something new. The 35-year-old’s struggles had reached a breaking point in Boston and left him looking for a job. Los Angeles was curious about his willingness to try out a few new things. That involved tweaking the shape of and tilt on his slider, refining the location on his four-seam fastball and even fiddling with a two-seam fastball. Also, the Dodgers asked, could Brasier throw a cutter?
The next day, Brasier went out and tried for the first time. “It was actually (coming out) like sinkers,” Brasier said of the pitch’s profile. Working out at the Dodgers’ facility in Arizona a few days later, director of minor league pitching Rob Hill had him try out grips before they settled on something that worked, quelling some of Brasier’s woes against lefties and giving a different look to play off his slider. Add him to the cutter crew."
https://theathletic.com/4702169/2023/07/19/dodger-details-new-pitches-deadline-needs/
"The day after the Dodgers came calling, Ryan Brasier tried something new. The 35-year-old’s struggles had reached a breaking point in Boston and left him looking for a job. Los Angeles was curious about his willingness to try out a few new things. That involved tweaking the shape of and tilt on his slider, refining the location on his four-seam fastball and even fiddling with a two-seam fastball. Also, the Dodgers asked, could Brasier throw a cutter?
The next day, Brasier went out and tried for the first time. “It was actually (coming out) like sinkers,” Brasier said of the pitch’s profile. Working out at the Dodgers’ facility in Arizona a few days later, director of minor league pitching Rob Hill had him try out grips before they settled on something that worked, quelling some of Brasier’s woes against lefties and giving a different look to play off his slider. Add him to the cutter crew."
https://theathletic.com/4702169/2023/07/19/dodger-details-new-pitches-deadline-needs/