I'd chalk it up to finding his footing (and hands) while adjusting to the NFL speed. The kid's best attribute all through college, if not his route running, was his hands.
I'm not worried. Still, that slant off his hands was pretty bad. That gets caught by a Bronco defender instead of Holmes and Jones could very well be in discussion for being the goat of the game 2 weeks in a row.
Hopefully they do not have to trade up for their guy and can add 1 or 2 top 100 players at WR and TE.
Throwing to Matthews, Jones, Top 100 Rookie, Clay, O'Leary, Top 100 Rookie would not be bad.
Re: sensor technology, has anyone wondered why the footballs, pylons, and heck even yard lines on the field don't have chips in them so we can accurately map where the ball traveled? Would never have to second guess where the refs place the ball.
No reason to think Matthews, Jones, and Holmes are unable to run down field. Are they Tyreek Hill, Marquise Goodwin, and JJ Nelson? No, but they still have enough giddy-up.
Throwing guys open, to me, means throwing the ball to a spot on the route where the WR will be. Obviously if it is a broken play or option route, that changes.