Dax Kilby’s Arizona run is giving the Yankees something more interesting than a hot streak. It’s giving them a live test case for whether one of their best young hitters can keep his contact skills and add real thump.
The 19-year-old shortstop arrived in the desert with a swing that already did plenty of things right. He got on base.
He made contact. He didn’t need a total overhaul.
But after a week of work with Yankees hitting director Jarret DeHart and other player-development staff in Tampa, the organization asked him to try a different look - one aimed at helping him stay balanced, control his forward move and drive the ball in the air.
The change was built around a narrower, more open stance. Kilby had started from a wide, closed setup.
The Yankees believed he was getting too deep into the hitting zone and turning too many swings into grounders. The goal wasn’t to scrap his natural bat path, but to give his hips more room to rotate and help him use his legs better.
DeHart didn’t sound like someone expecting instant payoff.
“Yeah, I was surprised,” DeHart said.
And yet that’s exactly what happened.
Through his first 15 games in the Arizona Fall League with the Salt River Rafters, Kilby hit .295 with a .357 on-base percentage and .623 slugging percentage. He piled up 18 hits, and 12 of them went for extra bases: two homers, six doubles and four triples. That’s the kind of production that jumps off the page even before you get to the underlying numbers.
The hard-contact data backs it up. Kilby posted a 45.3% hard-hit rate and reached a top exit velocity of 109.8 mph, according to MLB’s Fall League reporting. He also added six walks, nine strikeouts and five stolen bases in those 15 games, a reminder that the new swing hasn’t come at the expense of the traits that made him such a compelling prospect in the first place.
One October 20 highlight captured the shift nicely: a leadoff homer hit at 107.1 mph. It was the kind of swing that shows why the Yankees are paying attention to this experiment in the first place.
Kilby’s profile has always been about more than just the box score pop he’s showing now. The Yankees drafted him 39th overall in 2025 and signed him for $2,797,500. He entered the Fall League ranked No. 78 on MLB Pipeline’s Top 100 Prospects list, with his bat-to-ball ability and strike-zone judgment already viewed as real strengths.
That’s what makes the mechanical tweak so notable. In 2026, Kilby’s ground-ball rate was 40.2%, according to FanGraphs, and the Yankees wanted to create more lift without stripping away the contact skill that helped him draw 39 walks against 31 strikeouts in 32 games at Single-A Tampa.
His season never gave him much of a runway. Hamstring injuries wiped out two months, then cost him another six weeks after he returned May 28 and logged just two at-bats.
He played 36 games overall, including 32 with Tampa, where he posted an .883 OPS. Even with the stop-and-start year, his 24.4% walk rate led Yankees minor leaguers with at least 160 plate appearances, and his swing-and-miss rate was 9%.
That’s why the question here goes beyond whether he’s simply running hot in Arizona. The Yankees don’t need him to turn into a high-strikeout slugger. They need to know whether a contact-first hitter can start doing more damage without losing the parts of his game that already play.
There’s still plenty to prove. Fifteen games is not a full answer, and opposing pitchers will adjust. But the early signs are hard to miss, especially for a player who is nearly four years younger than the average pitcher in the AFL.
Kilby’s age has also stood out to the people around him. His Salt River roommate Kyle West has praised his maturity, and so have J.T.
Etheridge, who played with him at Tampa, plus Salt River hitting coach Scott Nestor and manager Ted Tom. That kind of feedback matters alongside the exit velocities and extra-base hits.
Defensively, Kilby has continued to play shortstop in every appearance since returning, including in Arizona. The Yankees haven’t said where they ultimately see him or when he might arrive in the majors. For now, the next stop is Sunday’s Fall Stars Game, followed by offseason strength work and a longer look at whether this new swing can hold up in 2027.
In Other News...
Yankees Prospect Is Forcing A Bullpen Question Few Teams Face
Chris Veach has become one of the more intriguing arms in the Yankees system, and not just because of the numbers hes putting up in the minors. The 24-year-old right-hander, signed as an undrafted free agent in 2024, has taken an uncommon route to attention by leaning on his changeup more than his fastball, a pitch mix that has helped him miss bats and keep runs off the board.
For a player trying to climb into a crowded organization, that kind of profile naturally creates a conversation about where he fits next. Scouts like the changeup and the arm speed that sells it, but theres still the bigger question of how that approach plays as hitters get better and more disciplined, which is why Veachs next step may say as much about the Yankees bullpen picture as it does about his own rise. [Read more 🡒]
Gary Sanchez Suddenly Feels Like A Real Yankees Option
Gary Sanchez is back on the radar in a way that would have sounded unlikely not long ago. After the Brewers declined their mutual option for 2027, the veteran catcher hit free agency following a 2026 season in Milwaukee in which he played 86 games, hit .209 with 12 home runs and posted a .771 OPS. For the Yankees, where the catcher situation remains unsettled, that makes a familiar name worth revisiting.
Sanchez has already signaled he would be open to a return to New York, and that matters because the Yankees could use a proven backup with some power in the bat. It is still early in the offseason, but the combination of need, experience and familiarity gives this a real chance to become more than nostalgia if the Yankees decide to explore it. [Read more 🡒]
Yankees Delay On Coaching Staff Is Starting To Cost Them
Hal Steinbrenner said he would take a look at the Yankees coaching staff after the season, but the calendar has moved on and the group remains in place without any announced changes. In the meantime, the organization has already taken hits on the staff side, losing catching coordinator Tanner Swanson to the Seattle Mariners and former Triple-A manager Shelley Duncan to the Boston Red Sox.
The uncertainty now hangs over a bigger part of the operation, with no word yet on whether hitting coach James Rowson and his assistants will be back next season. Aaron Bates, who recently left the Dodgers, has surfaced as a possible candidate, but the Yankees still have not clarified how much turnover is coming or when it will arrive. [Read more 🡒]