The subject of David Johnson and his potential touches per game this season has been a ongoing theme this offseason. It came up again this weekend when the Cardinals' running back attended a fantasy football event (fantasy football is the No. 1 reason so many people want to know about Johnson's touches this season, in an effort to forecast his production.)

Back at the owners' meetings in March, Bruce Arians first talked about Johnson getting 30 touches -- rushing attempts plus receptions -- per game. When Johnson threw out the first pitch at a Diamondbacks game in April, he said there was no reason why he couldn't get 30 touches a game.

"I never really got fatigued," Johnson said then. "Those tough defense games against Seattle and the Rams, those games might feel a little sore, but that's not until the adrenaline comes down. I never really feel too bad."

Arians has said he'll be smart about it. And the likelihood of Johnson averaging 30 touches a game, or even reaching that number a lot, just isn't great.

Last season, one in which Johnson threatened to gain 1,000 yards both rushing and receiving, Johnson didn't come close to averaging 30 touches a game. In fact, he led the league in touches at "only" 23.3. (Take out his injury-shortened finale, when he only had eight touches before going out with a scary knee injury, and Johnson still only averaged 24.3 touches a game.) Only three times did Johnson reach 30 touches in 2017, when he was the undisputed bellcow of the offense: 30 at San Francisco, 41 at home in the overtime tie against Seattle, and 32 in the late-season win at Seattle. (He had 29 at Minnesota and 27 against Washington.)

Make no mistake. Johnson will again be the centerpiece of the offense. There will be days when he gets 30 touches. But circumstances will be different each game. Defenses will create new challenges. Arians will want his receivers involved. There will be reasons at times to not overdo it with Johnson, too, something Arians has acknowledged. It just doesn't make a lot of sense that he will average that many. Unless it's against Seattle.