Designated for Assignment, Waivers and Outright Assignments Explained
What it means when a player is designated for assignment, how the seven-day clock works, who can claim him on waivers and when he can refuse an outright assignment to the minors. Written for fans who see the transaction line and want to know the rest.
The transaction line on a team's page reads "designated for assignment," and the player in question is off the roster. Fans often take it as a firing, and sometimes it is. More often it is a roster-management tool with a clock attached, and what happens next depends on a handful of rules about waivers, contracts and service time that are not hard to learn once someone lays them out in order.
In short, a club that designates a player for assignment, usually abbreviated DFA, removes him from its 40-man roster immediately and then has a fixed period, seven days as of the 2025 season, to decide his fate. It can trade him, put him on outright waivers where any other club can claim him, send him to the minor leagues if no one does, or release him. The player is paid while he waits, but he cannot play for the club during the window.
This article walks through the process in order: why the 40-man roster is the pressure point, how the clock runs, who can claim a player and in what order, when a player can refuse a minor-league assignment, and why clubs use the tool as often as they do. Rules in this area come from the collective bargaining agreement between the clubs and the players' union, and they change when the agreement changes, so check the league's official site at https://www.mlb.com/ for the current text.
Where the DFA fits: the 40-man roster
Every major-league club keeps two rosters at once. The active roster, 26 players as of the 2025 season, is the group that can play on a given night. The 40-man roster is the larger group of players under contract and controlled by the club, which includes the 26, players on the injured list, and prospects who have been added to protect them from being taken by other clubs. You can read the full breakdown in our guide to the 40-man roster, the 26-man roster and the injured list.
The DFA is a 40-man roster move. When a club wants to add a player to the 40-man roster, whether it is a prospect being promoted, a free agent being signed or a player acquired in a trade, it must have an open spot. If all 40 are filled, someone has to come off. One way to clear the spot is to designate a player for assignment, which takes him off the 40-man immediately and gives the club its opening.
That is why the phrase often appears in pairs on the transaction line: "Club A selected the contract of Player X and designated Player Y for assignment." The second move is the price of the first. Fans reading the wire for a bullpen arm who has just been demoted are usually reading the roster arithmetic of a team that needed a spot.
What "designated for assignment" means
The wording is odd, and it is precise. The club "designates" the player for "assignment," meaning that it will assign him somewhere else: to another major-league club by trade, to its own minor-league affiliate, or to the unemployment line by release. While the designation is pending, the player has no assignment at all. He is off the 40-man roster, not on the active roster, and not on any minor-league roster.
Several details follow from that.
- The player is still paid. His contract remains in force until the club resolves it. A player on a major-league contract keeps receiving his salary during the window.
- He does not count against the club's 40. That is the point of the move for the club.
- He cannot be used in games. The club is not allowed to keep a DFA'd player on the active roster while the clock runs.
- The window ends with a result. By the end of it the player has been traded, claimed, assigned outright or released.
The designation is a statement about the roster, not about quality. Clubs designate productive major-leaguers who happen to be in the way of someone with a better contract or a younger age, and they hold on to underperformers who are on guaranteed deals.
The seven-day clock
Before the collective bargaining agreement that took effect in 2017, a club had ten days to resolve a designated player. That agreement shortened it to seven, and the period has stayed at seven since. That is the number to use for the 2025 season, with the usual caution that the current agreement is scheduled to run through the 2026 season, so any change will be announced by the league and the union.
The club can end the clock early. If another club makes a trade offer on day two, the original club may complete the trade then; if no one is interested, the club may release the player or place him on outright waivers right away. A club that is hunting for a trade partner, and does not want to give the player away for nothing, can use as much of the window as it needs.
Because the clock is short, the common pattern is a sequence like this, using a hypothetical club and player:
- Monday: the club needs a 40-man spot to add a reliever from the minors. It designates a backup catcher for assignment.
- Tuesday and Wednesday: the club's front office calls other teams to see whether any would trade a minor-league player for the catcher. A trade is the best result because it returns value.
- Thursday: nobody offers a trade, so the club places the catcher on outright waivers. The other 29 clubs have a short window to claim him.
- When the claim window closes: if no one has claimed him, the catcher clears waivers and the club can assign him outright to the minors, if he has no right to refuse, or release him.
The exact timing inside the seven days varies from case to case. The point is that the club has a window to find the best option and a fixed end date.
Four ways a designation ends
| Outcome | Who decides | What happens to the player | What the club gets |
|---|---|---|---|
| Trade | The club and another club | Joins the new club, which must put him on its 40-man roster | Whatever the other club sends back, often a minor-leaguer or cash |
| Waiver claim | Another club | Joins the claiming club and must be on its 40-man roster | Nothing in return; the claiming club takes over the contract |
| Outright assignment | The club, after he clears waivers | Goes to the minors, off the 40-man roster, if he accepts | Keeps the player as depth without the 40-man spot |
| Release | The club | Becomes a free agent | Owes the remaining guaranteed money |
Each row has fine print. A player claimed on waivers does not get a vote; the claim is an assignment of his contract, and he reports to the new club. A player traded during the window also has no choice unless his contract includes a no-trade clause. A player who clears waivers and has the right to refuse an outright assignment can reject it and become a free agent. And a released player is owed the guaranteed portion of his contract by the club that released him, which is why clubs avoid releasing players with large contracts unless they have to.
Waivers: who can claim and in what order
Waivers are the process through which every other club gets a chance to take a player before he is sent down or released. When a club places a designated player on outright waivers, the other 29 clubs can claim him. If more than one club claims, priority is determined by the standings: the club with the worst record gets the first claim, and so on up the ladder. The league's rules set out the exact tie-breaking and the way priority is calculated early in the season, and those details are in the agreement and the league's rules.
A claiming club must put the player on its own 40-man roster right away. If its 40-man roster is full, it has to make a spot, usually by designating one of its own players, which can set off a domino effect around the league: one DFA creates a claim that creates another DFA. Fans sometimes see three or four transactions in a row that all trace back to one player.
When a claim is made, the original club receives nothing in return, and the contract moves with the player. This is why waivers are a poor way for a club to get value from a player and an efficient way to free up a spot. A club that wants something back tries to trade him first.
Before 2019, there was a second kind of waivers, revocable waivers, that clubs used in August to trade players after the non-waiver deadline. The league eliminated that system. Today there is one trade deadline, and after it players can still be designated, claimed and released, but they cannot be traded.
Outright assignments and the right to refuse
If a designated player is not traded or claimed, the club can assign him outright, which means sending him to a minor-league team and removing him from the 40-man roster. The player is still part of the organization, but he no longer occupies a spot that could be used for a prospect or a free-agent signing.
An outright assignment does not need the player's consent in the typical case. There are two groups who can refuse it:
- A player who has accumulated three or more years of major-league service time.
- A player who has been outrighted before in his career.
A player in either group may reject the assignment and become a free agent instead. The decision is a trade-off. He gives up a spot with his old organization, where he might be a call-up candidate, in exchange for the chance to sign anywhere that wants him. What happens to the money owed on his contract depends on the contract and the agreement's terms, and the player's agent will weigh it against what other clubs may offer. Service time, the rule that governs these rights, is explained in our guide to service time, arbitration and free agency.
A player who is not in either group has no choice. He goes to the minors, stays with the organization under his existing contract and serves as depth. That is why a typical outright assignment involves a younger player who has not yet reached three years of service: he cannot decline.
Why clubs designate players
Clubs use the DFA for at least five distinct reasons, and the transaction line looks identical for all of them.
- To clear a 40-man spot for someone else. This is the most common reason, and the one described above.
- Because the player is out of options. A player on the 40-man roster can be sent to the minors without waivers only while he has minor-league options remaining. Once he is out of options, sending him down means putting him through waivers, which risks losing him. Minor-league options are one of the most important and least understood rules in roster management.
- To make way for a Rule 5 or other roster-protection decision. Clubs that expect to lose prospects in the Rule 5 draft add the best of them to the 40-man roster in November, which can force out someone else.
- To cut ties with an underperforming veteran. Here the player is likely to be released, and the club accepts that it still owes his salary.
- To clear space in the offseason. Clubs trim their 40-man rosters in the winter to make room for free-agent signings and trade acquisitions.
In every case, the reasoning is the same: a roster spot is a scarce asset, and a DFA is a way to spend it without losing the player immediately.
DFA, option, release: the differences that matter
Three terms are often confused. A table makes the differences clear.
| Term | On the 40-man roster? | Can other clubs claim him? | Needs the player's consent? |
|---|---|---|---|
| Optional assignment (an option) | Yes | No | No, but only while the player has options left |
| Designated for assignment | No | Yes, once he is placed on waivers | No |
| Outright assignment | No | Not after he has cleared waivers | Yes, if he has three years of service or a prior outright |
| Release | No | Rarely, because a claiming club would take on the whole contract | No |
An optional assignment moves a player down while keeping him on the 40-man roster, which is why the player can come back up quickly. An outright assignment removes him from the 40-man roster permanently. Fans who see "optioned to Triple-A" and "outrighted to Triple-A" on the same day are seeing two very different transactions.
Common questions
Is a DFA the same as being fired? No. It is the start of a process with several possible endings, only one of which is release. Many DFA'd players are traded or claimed and keep playing in the majors within days.
Does the player get paid during the seven days? Yes. He remains under contract and is paid according to its terms.
Why do some players get DFA'd right after a good game? Because the decision is about the roster, not that night's performance. A club may need the spot for a player who is arriving or may be deciding who to keep before a deadline.
Can a DFA'd player be traded after the trade deadline? No. Since 2019 there has been a single trade deadline, and once it has passed a designated player can still be claimed on waivers or released but cannot be traded. A claim is a transfer of his contract, not a trade.
What is a "waiver wire" in fantasy baseball? It is a different thing that borrows the name. In fantasy leagues, the waiver wire is the pool of unrostered players; in the majors, waivers are the process described above. For fantasy strategy, see our fantasy trade strategy guide or the fantasy baseball topic page.
Where to go next
If you want to follow the transaction wire with a better eye, start with the 40-man roster guide, then read about minor-league options, the Rule 5 draft and service time and arbitration. Current trades and signings are collected on the trades and free agency topic page, and waiver priority depends on the standings.