Q >> After the first four games of the season, what overall letter grade would you give the Broncos? And why?

— Ed Helinski, Auburn, N.Y.

Parker >> Let’s say in the B- or C+ range. Looking at the first four games, I’d have guessed 1-3 before the season. In fact, I think I did for The Post’s preview magazine. So just by that mark alone, 2-2 is slightly above expectations in a broad sense.

The 2-0 road trip can’t be considered anything other than impressive, no matter what the wins looked like. Tampa Bay and the Jets are teams that should be in the mix for the postseason, and after the 0-2 start it could have gone sideways fast for Denver. Instead at 2-2, the Broncos are in an area where anything’s possible. Only 10 of 32 teams are 3-1 or 4-0, but there are 13 alone at 2-2. That includes the two divisional teams Denver plays at home the next two Sundays in Las Vegas and the Los Angeles Chargers. Big opportunities coming up.

Vance Joseph’s defense gets top marks so far, special teams gets a good grade, too, and the offense is off to a much slower start. Think Sean Payton ever thought he’d coach a team that’s No. 28 in scoring offense and No. 3 in scoring defense?

The defense has to show it can withstand early-season injuries over more than just a couple of weeks. The offense has seen its engine, the offensive line, start to find a rhythm after a really poor start. The question is whether Bo Nix starts to find a sustainable groove. If he does, this team can be dangerous. If he struggles, the long-term outlook might not suffer but it’s going to put the Broncos in a mode this fall where they have to ace every close-game test in order to be in playoff contention.

Overall, consider it a relatively promising start.

Q >> It felt like in Week 3 our offense started flowing capably for the first time in ages. I know it was rainy, but why were so many of our plays just short dump-off passes behind the line of scrimmage? If we’re throwing the ball, shouldn’t we do something more than screens?

— Mark, Arvada

Parker >> The Broncos tried, they just couldn’t get anything down the field going in the first half. One of the better balls Nix threw early on was up the sideline for Courtland Sutton on the first drive. It was just a touch overthrown but it was a good decision and a near big hit. They had some other chances early but missed them all. At times Nix looked like he had no idea where the ball was going to go coming out of his hand. Eventually screens and quick game and checking the ball down became what they felt like they could accomplish. That changed later on by just enough. But there are a couple of things that remain clear at this stage: Defenses are going to make Nix and the Broncos prove they can threaten down the field before they start loosening up.

Q >> Two questions from me. The first is where’s Davaughn Vele? My second question is about Javonte Williams. He looked like the guy we drafted last week. Is he the RB1 with Tyler Badie likely out or will we platoon him with Jaleel McLaughlin?

— JJ, Los Angeles

Parker >> Vele’s an interesting one. He looked good all preseason and training camp and then had eight catches in the opener, although they only amounted to 39 yards. He hurt his ribs that week and missed one game, but has been considered healthy by the team since then.

The Broncos right now are basically activating Troy Franklin instead of Vele. I suspect that the way the offense is currently constructed, Vele might have too much crossover with Lil’Jordan Humphrey and/or Josh Reynolds and they believe Franklin brings a different element with his speed. We haven’t seen that pay dividends yet, but they’ve taken deep shots to Franklin each of the past two weeks.

As for your other question, yeah, it’ll be Williams and McLaughlin mostly this week. Perhaps rookie Blake Watson will be active for the first time.