Updated August 16, 2019
| AL East | Closer | Job security | Tier | Next up | Wild card |
| Baltimore Orioles | Mychal Givens (committee) | + | 5 | Shawn Armstrong | Miguel Castro |
| Boston Red Sox | Brandon Workman (committee) | + | 3 | Marcus Walden | Matt Barnes |
| New York Yankees | Aroldis Chapman | +++ | 1 | Zach Britton | Adam Ottavino |
| Tampa Bay Rays | Emilio Pagan (committe) | ++ | 3 | Diego Castillo | Jose Alvarado |
| Toronto Blue Jays | Ken Giles | +++ | 2 | Derek Law | Tim Mayza |
| AL Central | |||||
| Chicago White Sox | Alex Colome | +++ | 3 | Aaron Bummer | Kelvin Herrera |
| Cleveland Indians | Brad Hand | +++ | 2 | Nick Wittgren | Tyler Clippard |
| Detroit Tigers | Joe Jimenez | + | 5 | Buck Farmer | Jose Cisnero |
| Kansas City Royals | Ian Kennedy | ++ | 3 | Tim Hill | Kevin McCarthy |
| Minnesota Twins | Taylor Rogers (committee) | + | 3 | Sergio Romo | Trevor May |
| AL West | |||||
| Houston Astros | Roberto Osuna | +++ | 1 | Will Harris | Ryan Pressly |
| Los Angeles Angels | Hansel Robles | ++ | 3 | Cam Bedrosian | Ty Buttrey |
| Oakland Athletics | Liam Hendriks | ++ | 3 | Blake Treinen | Joakim Soria |
| Seattle Mariners | Anthony Bass (committee) | + | 5 | Cory Gearrin | Sam Tuivailala |
| Texas Rangers | Jose Leclerc | + | 4 | Shawn Kelley | Jesse Chavez |
| NL East | |||||
| Atlanta Braves | Mark Melancon | + | 4 | Shane Greene | Luke Jackson |
| Miami Marlins | Jarlin Garcia (committee) | + | 5 | Jose Quijada | Adam Conley |
| New York Mets | Seth Lugo | + | 3 | Edwin Diaz | Robert Gsellman |
| Philadelphia Philles | Hector Neris | ++ | 3 | Nick Pivetta | Jose Alvarez |
| Washington Nationals | Sean Doolittle | +++ | 3 | Daniel Hudson | Hunter Strickland |
| NL Central | |||||
| Chicago Cubs | Pedro Strop | + | 4 | David Phelps | Craig Kimbrel (inj) |
| Cincinnati Reds | Raisel Iglesias | +++ | 3 | Michael Lorenzen | David Hernandez |
| Milwaukee Brewers | Josh Hader | +++ | 2 | Matt Albers | Junior Guerra |
| Pittsburgh Pirates | Felipe Vazquez | +++ | 2 | Kyle Crick | Francisco Liriano |
| St Louis Cardinals | Carlos Martinez | ++ | 3 | Andrew Miller | John Gant |
| NL West | |||||
| Arizona Diamondbacks | Archie Bradley | + | 3 | Yoshihisa Hirano | Yoan Lopez |
| Colorado Rockies | Scott Oberg | ++ | 3 | Wade Davis | Jake McGee |
| Los Angeles Dodgers | Kenley Jansen | +++ | 1 | Pedro Baez | Joe Kelly |
| San Diego Padres | Kirby Yates | +++ | 1 | Craig Stammen | Andres Munoz |
| San Francisco Giants | Will Smith | +++ | 2 | Reyes Moranta | Tony Watson |