2. History with Harbaugh
This will be Harris' first time playing for Harbaugh.
But the two nearly crossed paths almost a decade ago when the running back was split between choosing Michigan or Alabama.
Harris recalled a funny story how Harbaugh showed up to Antioch High School to recruit Harris, one of the country's prized running backs. It just so happened to be the school's homecoming game.
"He took the mic in front of everybody and called out the homecoming queen," Harris said. "I just look back and I was just like, 'What the heck? The dude is coming out here doing everything.'
Harris later added: "It was kind of cool the way he did that."
Harris eventually ended up at Alabama, where he won a pair of national titles. But it was clear Harbaugh left a strong impression on him, something the two caught up on earlier this week.
"Even talking on the phone, he's the same guy," Harris said. "We sat down chopping it up and went out to eat dinner.
"It's the same guy. Energetic, man. He's the life of the party," Harris added. "He's just a good guy to be around. He makes you feel comfortable."
And if it sounds like things have come full circles, Harris agrees.
"My family was telling me that, too, how crazy it is," Harris said. "First you see him coach and then we met him in high school. Playing for him, it is full circle."
3. A durable workhorse
Harris has been among the league's most durable players since he entered the league in 2021.
Harris has appeared in all 68 regular-season games, plus three playoff contests, over the past four seasons in Pittsburgh.
The 27-year-old has been productive, too, as he the only active player in NFL to have at least 1,000 rushing yards in each of the last four NFL seasons.
So, what's the key to Harris' durability?
"Just training, you know," Harris said. "I always try to do the little things in the offseason. Certain times you got to be in the weight room. And then sometimes I try to spend a good amount of times working on the small muscles.
"Maybe swimming, doing little small things that the weight room can't provide to work on the smaller muscles. And it translates to the field," Harris added. "I stretch and do yoga, all that stuff, all that plays a part in how to stay durable and last long."