Seven teams identified as sellers ahead of the 2026 trade deadline

What happened

With five days left before the 2026 trade deadline, FanGraphs' Jason Martinez declared in the RosterResource chat on July 30 that seven teams can be confidently identified as sellers: the Athletics, Reds, Rockies, Royals, Angels, Mets, and Giants. Another five or six clubs remain on the fence, capable of moving in either direction. Martinez characterized the broader market as one with a lot of buyers — most of them in need of pitching — and not a lot of options to go around. Despite that imbalance, he expressed an expectation of an eventful stretch run to the deadline.

The Diamondbacks, whose standing in the standings anchors this dispatch, sit on the buyer's side of that ledger in name only. Their postseason math tells a more complicated story.

Why it matters

The seller-buyer divide at the deadline is the organizing principle of every late-July roster move, and the shape of this particular market has real operational consequences. When Martinez notes that buyers are plentiful and pitching options are scarce, he is describing a seller's leverage — the teams willing to move arms can extract more in return precisely because demand outpaces supply. For clubs on the fence, that leverage calculation is the whole game: hold a starter or reliever and you may get a better return in the next 48 hours; move too early and you leave value on the table.

The seven teams FanGraphs identified as sellers represent a range of situations. Some are deep in rebuilds; others are simply too far out of contention to justify the cost of renting a contender's castoffs. What they share, per the RosterResource assessment, is clarity — a decision already made. The five or six undecided clubs are the ones worth watching most closely as the deadline approaches, because their choices will determine how much inventory actually reaches the market.

Where the club stands

The Diamondbacks enter deadline week at 86-76 (.531), sitting third in the NL West, 14 games back in the division. Their Wild Card position is ranked 4th, sitting 2.0 relative to the cut line — and they have been eliminated from both the division race and the Wild Card race per the verified standings.

That last detail is the one that reframes everything. A team at 86-76 in late July is not, on its face, a bad baseball team. But elimination from both available postseason paths means Arizona is playing out the string regardless of what happens at the deadline. The Diamondbacks are not among the seven teams FanGraphs identified as sellers, but their postseason math puts them in a category of their own: not a seller by declaration, not a buyer with anything meaningful to buy toward.

The team enters the deadline on a two-game losing streak, which adds no urgency to a situation the standings have already resolved.

Arizona heads to Progressive Field for a three-game series against the Cleveland Guardians to close out July and open August. On Friday, July 31, Mitch Bratt is the probable starter opposite Tanner Bibee. Saturday, August 1 lines up Kohl Drake against Parker Messick. Sunday, August 2 sends Merrill Kelly to the mound against Gavin Williams.

It is a road series against a team that, depending on where Cleveland lands in the deadline shuffle, may be adding or subtracting from its own roster in real time. For Arizona, the series is a chance to play meaningful baseball in the calendar sense — these games count, the standings update, the streak either extends or ends — even if the postseason column has already been zeroed out.

What we don't know yet

### Which fence-sitters tip seller?

Martinez identified five or six clubs as genuinely undecided, and that group is where the deadline's real drama lives. Their identities were not specified in the RosterResource chat, and their decisions will shape how much pitching actually becomes available to the buyers crowding the market. A fence-sitter who decides to move a frontline arm changes the calculus for every contender currently working the phones; one who decides to hold changes it just as sharply in the other direction.

It also remains unresolved how aggressively the seven identified sellers will move. Being characterized as a seller is a posture, not a transaction. The gap between "willing to deal" and "deal done" is where most deadline weeks actually live, and with five days remaining as of the RosterResource chat, there is still meaningful time for the market to develop — or stall.

What the Diamondbacks themselves do in this window is similarly open. Their elimination from postseason contention does not automatically place them among the sellers in the FanGraphs accounting, but it does raise the question of whether any of their tradeable assets find new homes before the deadline passes. That question was not addressed in the July 30 chat.

What to watch

The next five days are the story. Martinez's framing — many buyers, scarce pitching, an eventful stretch expected — sets up a deadline that could move quickly once the first significant deal breaks. The fence-sitters are the variable; watch for any of those clubs to clarify their direction, because each one that tips toward selling adds inventory to a market that, per the RosterResource assessment, is currently undersupplied on the pitching side.

For Arizona specifically, the Cleveland series doubles as a quiet backdrop to whatever happens around them. The Diamondbacks are on a two-game skid, eliminated from both postseason paths, and facing a rotation matchup that runs through Sunday, August 2 — all while the rest of the league negotiates its direction. Whether Arizona itself becomes a topic of deadline conversation is, as of July 30, an open question the RosterResource chat left unanswered.