PHILADELPHIA — As the NFL draft, it’s hard to predict the impact of MLB’s trade deadline deals.

Sometimes the results emerge quickly, as when Andrew Benintendi, a seemingly perfect fit for a Yankees offense in need of a left-handed contact hitter, went down for the season with a fractured hook of the hamate bone in his right wrist, just weeks after being acquired.

Other times, the effects take longer to emerge.

Back in July 2018, the Yankees were in the market for an elite reliever to add to what was already an excellent bullpen.

On July 24, they sent three minor league pitchers to the Orioles in exchange for Zack (then Zach) Britton, who was coming off a torn right Achilles tendon suffered during the previous offseason.

Britton, 30 years old at the time, was just rounding back into form. He ended up pitching well enough for the Yankees in 2018 that they signed him to a three-year contract extension (with a 2022 option) after the season, but after a superb 2019 and ’20, the left-hander suffered an elbow injury (among other maladies) that cost him most of the next two seasons.

There was another reliever moved at the 2018 trade deadline who had a better fate: Ryan Pressly.

Then with the Twins, the then-29-year-old Pressly did not have the résumé that Britton did, having saved just one game in five-plus big league seasons.

The Astros acquired Pressly for a pair of minor leaguers and added him to a bullpen led by Roberto Osuna, who was also acquired at the ’18 deadline from Toronto in a separate, much more controversial deal. Though the Astros eventually lost to the Red Sox in that season’s ALCS, Pressly was lights-out, allowing two earned runs and striking out 32 in 23 ⅓ regular-season innings after the deal (and one earned run in five postseason innings). He then signed a two-year, $17 million extension prior to 2019, and after a lackluster 2020 COVID season, became the full-time closer in 2021.

Since his promotion to the closer role, Pressly has transformed into one of the best relievers in the sport. And now he is in the midst of perhaps the best run of his career, closing out a combined no-hitter in Game 4 of the World Series against the Phillies and going five outs for the save in the Astros’ nailbiting 3-2 Game 5 win Thursday night.

In his past 21 playoff appearances, Pressly has given up just two runs — one earned (0.39 ERA) — on 12 hits and five walks, striking out 31 over 23 innings. That includes three saves in the Astros’ four-game sweep of the Yankees in this year’s ALCS, when Pressly struck out six in 3 ⅓ innings.

Would Pressly have been the same elite reliever in a Yankees uniform? That’s anyone’s guess. But it’s not as if they’ve had overwhelming first-hand experience: In 17 regular-season games against the Yankees, Pressly has given up three homers and recorded a 6.50 ERA in 18 innings pitched. That includes 10 appearances at Yankee Stadium, where Pressly has been virtually unusable, with a WHIP of 2.032 and 12 runs allowed — 11 earned — in 10 ⅓ innings.

Still, the Astros surely don’t regret the choice they made four-plus years ago — with Pressly signed on a new deal for the next two years for $30 million and the team only one win away from a World Series title.

It’s hard to say whether the Yankees feel the same about Britton, who tried to come back after last year’s Tommy John surgery in less than 12 months, was shut down due to arm fatigue and will be a free agent again this offseason.

Despite Britton’s injury-filled recent history with the Yankees, a short-term, inexpensive deal to remain with the team is not out of the question.

A better Bader in 2023?

Harrison Bader spent nearly two months rehabbing from plantar fasciitis after he was traded from the Cardinals to the Yankees, and continued to wear a foot support throughout the playoffs.

He doesn’t expect that to be the case next season.

Bader, who was at the World Series at Citizens Bank Park this week while working with MLB Network, said he expects a full offseason of rest to be enough to prevent further issues next year.

“It feels great,’’ Bader said this week. “It was at 100 percent by the end of the year, and I was running [well]. The support on the foot was more of a mental thing. I felt more comfortable when I was wearing it in games. Then I’d take off and be fine walking out of the stadium. I don’t foresee any complications going forward, which feels good to say.”

Whatever was — or wasn’t — going on with Bader’s foot, it didn’t affect him at the plate in the postseason, when he was the Yankees’ most dangerous hitter.

After hitting just five homers in 264 plate appearances with St. Louis this year and none in 49 regular-season plate appearances following his trade to the Yankees, Bader went on a tear in the playoffs. In 35 postseason plate appearances, Bader hit five homers, tops on the Yankees.

“I’ve always played the long game with my career,’’ the 28-year-old Bader said. “I had my best season in 2021… and this was a continuation of that.”

In 103 games last year, Bader hit a career-high 16 homers. Bader, though, felt discomfort in his right foot during spring training with the Cardinals and believes it impacted him for most of the season.

“Unfortunately, I had the speed bump coming out of spring training and the work we were doing [with the Cardinals] was put on hold,’’ Bader said. “I knew once I was healthy, I’d be effective.”

Indeed, he went on an October power surge he said was a product of “getting pitches right in the heart of the plate.” And Yankees hitting coach Dillon Lawson has said he wants the center fielder to dive into further tapping his power potential.

Yankees in the Series

David Robertson isn’t the only ex-Yankees right-hander in the Phillies bullpen in the World Series. Nick Nelson, who pitched a combined 22 games for the Yankees in ’20 and ’21, made his Series debut in Game 3 in Philadelphia.

The 26-year-old Nelson was traded last offseason — along with catcher Donny Sands — in an effort to clear space on the Yankees’ 40-man roster. Nelson had a rocky season in Philadelphia, leading the league with 13 wild pitches in just 68 ⅔ innings.

The Yankees picked up minor league first baseman T.J. Rumfield in the deal. The lefty-swinging 22-year-old hit well with High-A Hudson Valley (he posted a .284/.381/.411 slash line) and now is playing in the Arizona Fall League, but is at least a few years away from being an option in The Bronx.