It's tricky, the deadline addition from the buyer's standpoint. You're getting a player expected to play well and improve your contending roster, but the post-deadline stretch drive provides a small sample size for those new faces. As such, aberrant performances – especially for pitchers – are entirely possible.
That means even the most headline-grabbing deadline additions are prone to being disappointments across those limited samples. On the other hand, some of those talents procured in the name of improving their new teams' playoff odds and World Series chances do exactly what they were supposed to, sample sizes be damned. Some are even better than expected.
With the 2026 Major League Baseball trade deadline exactly one month behind us, it's time to look back at some of the more notable deals and highlight which headliners have thus far been major successes … or major disappointments. There's still the month of September left to correct or reinforce these performances thus far, but here's where things stand one month out. Bad news first, in keeping with therapeutic best practices … Padres lead exec AJ Preller correctly identified the rotation as an area of need prior to the deadline, but the Mize addition has not helped the San Diego cause.
He's made six starts for the Pads – broken up by an ankle injury in a dugout steps mishap – and over that span he's put up an ERA of 6.97 with an additional five unearned runs on his ledger. From a run-prevention standpoint, he's been one of the worst starting pitchers in baseball since the deadline. He's also seen his strikeout rate collapse from 24.9% before the deal to 12.2% since joining the Padres.
As with all these players, the sample size here is small, but Ward has been a disaster in Seattle so far. Acquired from the Orioles (who now have a better record than Seattle), Ward has slashed a meager .113/.212/.141 with one extra-base hit in 71 at-bats. The Ward the M's traded for had a slash line of .256/.383/.346 with Baltimore, so this has been a cratering and then some.
He's also been putting these numbers up as a DH with Seattle. The 33-year-old veteran right-hander was having a subpar season with Seattle before the trade deadline. The White Sox, though, were betting on Castillo's overall body of work – a very strong body of work for the three-time All-Star.
Extract — continue reading at the source.
