Updated August 1, 2020
| AL East | Closer | Job Security | Tier | Next up | Wild card |
| Baltimore Orioles | Cole Sulser | + | 4 | Mychal Givens | Miguel Castro |
| Boston Red Sox | Brandon Workman | ++ | 3 | Matt Barnes | Marcus Walden |
| New York Yankees | Zack Britton | + | 2 | Adam Ottavino | Aroldis Chapman (inj) |
| Tampa Bay Rays | Oliver Drake (committee) | + | 3 | Nick Anderson | Jose Alvarado |
| Toronto Blue Jays | Anthony Bass | + | 4 | Rafael Dolis | Ken Giles (inj) |
| AL Central | |||||
| Chicago White Sox | Alex Colome | ++ | 3 | Aaron Bummer | Steve Cishek |
| Cleveland Indians | Brad Hand | ++ | 2 | James Karinchak | Nick Wittgren |
| Detroit Tigers | Joe Jimenez | ++ | 3 | Buck Farmer | Jose Cisnero |
| Kansas City Royals | Trevor Rosenthal (committee) | + | 5 | Greg Holland | Ian Kennedy |
| Minnesota Twins | Taylor Rogers | ++ | 2 | Sergio Romo | Trevor May |
| AL West | |||||
| Houston Astros | Roberto Osuna | +++ | 1 | Ryan Pressly | Chris Devenski (dtd) |
| Los Angeles Angels | Hansel Robles | ++ | 3 | Ty Buttrey | Keynan Middleton |
| Oakland Athletics | Liam Hendriks | +++ | 1 | Joakim Soria | Lou Trivino |
| Seattle Mariners | Taylor Williams (committee) | + | 5 | Dan Altavilla | Matt Magill |
| Texas Rangers | Nick Goody (committee) | + | 5 | Jesse Chavez | Luke Farrell |
| NL East | |||||
| Atlanta Braves | Mark Melancon | ++ | 3 | Shane Greene | Will Smith (inj) |
| Miami Marlins | Brandon Kintzler | + | 4 | Ryne Stanek | Yimi Garcia |
| New York Mets | Edwin Diaz (committee) | + | 4 | Jeurys Familia | Seth Lugo |
| Philadelphia Phillies | Hector Neris | ++ | 3 | Adam Morgan | Tommy Hunter |
| Washington Nationals | Daniel Hudson | ++ | 3 | Sean Doolittle | Tanner Rainey |
| NL Central | |||||
| Chicago Cubs | Craig Kimbrel | + | 5 | Jeremy Jeffress | Rowan Wick |
| Cincinnati Reds | Raisel Iglesias | + | 4 | Michael Lorenzen | Amir Garrett |
| Milwaukee Brewers | Josh Hader | +++ | 1 | Corey Knebel | Brent Suter |
| Pittsburgh Pirates | Nick Burdi | + | 4 | Richard Rodriguez | Keone Kela (inj) |
| St. Louis Cardinals | Kwang Hyun Kim | + | 4 | Ryan Helsley | Giovanny Gallegos (inj) |
| NL West | |||||
| Arizona Diamondbacks | Archie Bradley | +++ | 2 | Kevin Ginkel | Hector Rondon |
| Colorado Rockies | Wade Diaz | + | 5 | Jairo Diaz | Scott Oberg (inj) |
| Los Angeles Dodgers | Kenley Jansen | +++ | 2 | Blake Treinen | Pedro Baez |
| San Diego Padres | Kirby Yates | +++ | 2 | Drew Pomeranz | Emilio Pagan |
| San Francisco Giants | Trevor Gott (committee) | + | 5 | Tony Watson | Tyler Rogers |