Jake Cronenworth has waited long enough.

So he’s not wasting any time on his rehab assignment.

The 32-year-old second baseman homered in his first at-bat on Friday with Triple-A El Paso.

Cronenworth has been on the concussion list since May 5. He’d been rehabbing recently at the team’s spring training complex in Peoria, Ariz., and joined Triple-A El Paso in Sugar Land on Thursday but did not get cleared through concussion protocol to start his rehab assignment until Friday.

His first-inning homer was a 107.5 mph drive that went 413 feet to right-center to end a nine-pitch at-bat.

Cronenworth was hitting .144/.272/.196 with one homer in 32 games when he went on the concussion list. He sustained the concussion when he was hit in the face by a pitch on April 18 in Anaheim, but he stayed in the game and initially chalked up lingering symptoms to travel to high-elevation games at Coors Field and Mexico City.

Because he’s been out of action for so long, Cronenworth’s timeline figures to hinge on how quickly he regains his timing — as well as working into playing a full nine innings on a regular basis — so homering in his first at-bat was a good first step.

“I think he’s going to give us a little bit of indication of, ‘Yeah, I feel ready,’” Padres manager Craig Stammen said. “Yeah, you know, my timing’s back, that kind of stuff. It’s a little bit almost like spring training, where we’ve got to just more so, not like health wise, but just like baseball wise — ‘Am I ready to play baseball? Am I ready to play every day when I get back?’”

In Cronenworth’s absence, the Padres had taken to starting Fernando Tatis Jr. regularly at second base. Tatis leads the team with 39 games at second base, followed by Cronenworth (30), Sung-Mun Song (21) and Will Wagner (2). Wagner started Friday at second base in San Diego.

“We’ve been missing … a little bit of that left-handed bat in our lineup that gives that professional bat, works the pitcher, has the opportunity for some slug, plays great defense,” Stammen said. “He just does all the little things on the field that you kind of miss, and you don’t really get recognized in the box score, but over the course of time, you’re like, ‘Man, we really miss a player like Jake,’ and we’ve missed him this entire time, and it’ll be awesome to have him back.”