INDIANAPOLIS — Most of the players had already left the field Wednesday after the Indianapolis Colts’ second day of OTAs, but there were still a few stragglers, namely Daniel Jones. The team’s starting quarterback stood in the end zone of the Colts’ indoor practice facility before sprinting the full 100 yards to the other side. He did that a few times, flanked by Colts staffers, and for any other player on the team, it likely wouldn’t have been newsworthy.But for Jones, his wind sprints marked a significant milestone. The last time the media and the public had a chance to watch him run on a football field was Dec. 7, when he suffered a season-ending torn right Achilles tendon in Jacksonville. Now, just 171 days later, it was hard to tell he’s still rehabbing from one of the most devastating injuries in sports.“I’m actually not surprised, just because of the way he works,” coach Shane Steichen said of Jones’ recovery. “When you rehab like he rehabs and put in the work like he does, it’s pretty impressive. … He’s relentless.”Jones, who celebrated his 29th birthday Wednesday, took the first reps in most of the Colts’ positional drills. He dropped back and threw to wide receivers and tight ends, and even did a few rollouts and play-action passes, but he did not participate in team drills. Steichen said the Colts will remain cautious with Jones’ rehab while leaving the door open for him to possibly join seven-on-seven drills next week.Jones said he still has several boxes to check as he regains his full mobility, and he acknowledged he’s keenly aware of his Achilles when he’s on the field. He expects that subconscious reminder to disappear as he inches toward the Colts’ season opener.When asked Wednesday whether he truly thinks he could be ready by then, Jones said “absolutely” and doubled down. A return that quick would be roughly nine months after Jones had surgery, making it one of the most aggressive Achilles rehabs in recent NFL memory.“I understand the process,” Jones said. “You gotta hit all your marks, and I understand that. I have a lot of trust and faith in the doctors and the trainers we have here, our (physical therapy) staff. And (I have) a lot of trust in myself to do the work and put myself in a position to play. That’s certainly been my goal all along.”But before Jones reaches his ultimate goal, however, he’ll need to clear several more smaller ones, such as running wind sprints after practice, with the hope of one day soon running away from defenders again.“I think you take a lot of that stuff for granted when you’re healthy, and then you get hurt or something like that, and you’re not able to do that for a while, you miss being able to do a lot of it,” Jones said. “So, (I’m) grateful to be back and, like I said, very appreciative and grateful for our trainers, (physical therapy) staff, everybody here who’s helped me along the way. And obviously (there’s) still a good ways to go.”