WICHITA — You might just call it business as usual, or perhaps taking care of business.

That might well sum up the Holcomb Longhorns opening day of the Class 4A Kansas State Track and Field Championships at Wichita State University’s Cessna Stadium.

Isaiah Armstrong qualified as the fastest 400-meter runner in 49.32 seconds, while Hugoton’s Mitchell Hamlin clocked his personal best to qualify fourth in 49.69.

Carter Blackburn, the defending state 110-meter hurdle champ, qualified in the third spot at 15.12.

The Longhorns’ 4x100- and 4x400-meter relay teams qualified first and second with times of 42.83 and 3:24.22, respectively. Devin Mader also made it in the fifth spot at 200 meters (22.48) and will qualify early Saturday in the 100.

Toss in a third-fifth place finish by Hugoton’s Abraham Garcia-Aguirre and Ethan Fox in the early morning 3,200 meters, and that’s a wrap on the few 4A schools competing.

For Armstrong, who has the fastest time in 4A and is among the top five overall this season in the 400, it was his usual game plan of getting out at a steady pace in the first 200 and then blazing home in the final 200 meters.

“My plan was to stay with Mitchell because I knew he’d come out pretty quick,” Armstrong said. “I’m just glad to make the finals.”

Armstrong, who did not run this race a year ago, has sprung onto the state scene with his 49.07 and then 49.05 times in the past few weeks.

“It’s good, and I think I could’ve gone a little faster,” Armstrong said. “Just thought I needed to save a little for the 4x4.”

The Longhorns qualified first in the 4x1 as Mader, Garrett Williams, Peyton Leonard and Armstrong set the pace for Saturday’s final.

The season began for this group with Armstrong moving from the second leg to anchor, Mader switching from anchor to leadoff and Williams switching from leadoff to second. Only Leonard has remained in the same rotation.

“We’ve just got all the right parts in the right place,” Mader said. “Peyton runs the curve so well and we’ve got the guys who run the straightaways best right where they are now.”

Blackburn, who nursed an injury for much of the season, ran one of the legs of the qualifying 4x4, and then did just enough in the 110s to reach Saturday’s finals where he will seek to defend his title.

The Longhorn senior, headed to Fort Hays State next year, had to wait like many others for the running events to get under way, delayed 90 minutes by lightning in the Wichita area at 8:10 a.m.

“The delay just put everything back a little — it wasn’t a big deal,” Blackburn said. “The race felt good, I nicked a few hurdles and I think I was a little high on a couple of them. I’m excited for the chance to defend tomorrow. That’s the big day.”

Ulysses’ Eduardo Mendoza, the Tigers’ lone entry, finished fifth in the pole vault, clearing 13-00.

The Hugoton duo of Garcia-Aguirre and Fox were rock solid in their pursuit of the podium, and it was a sweet reward for Garcia-Aguirre, who had been wearing a cast for much of the season on his right hand, only to have it removed just before regionals a week earlier.

He was more than thrilled with his third-place time of 9:44.54, a personal best while Fox was also at his best time of 9:51.12.

“It was a fast start and I knew I’d have to get out to have a chance at a high finish,” Garcia-Aguirre said. “I get to relax the rest of the day and get ready for tomorrow (1600 meters).”

Garcia-Aguirre will be headed to Fort Hays State next year, too, and is looking forward to his Saturday finale.

“You just go out and run your best and leave everything out there,” he said.