Falcons wide receiver Julio Jones (11) had 121 receiving yards and a touchdown last Sunday against the Redskins, who face another group of upper-echelon receivers this week in Tampa. (Ricky Carioti/The Washington Post)

The Redskins’ list of conquered running backs seemed to grow each week and the defense checked them off with pride — David Johnson, Alvin Kamara, Christian McCaffrey, Ezekiel Elliott, Saquon Barkley. As the team dominated in the run game, however, top-notch receivers T.Y. Hilton, Devin Funchess, Odell Beckham Jr., Julio Jones and Calvin Ridley all posted yardage above their season averages against Washington.

The Redskins are one of top run-stopping teams in the league but rank No. 20 against the pass after getting lit up for 350 yards and four passing touchdowns against Matt Ryan and the Falcons. Things don’t get easier this weekend against a Buccaneers receiving corps consisting of Mike Evans, former Redskin DeSean Jackson and tight end O.J. Howard.

Coach Jay Gruden said there were lessons learned against Atlanta that can be applied to this week.

“You know we have to do better on third down rushing the passer,” Gruden said. “We had some pretty good third-down situations for us to get some pass rush and we didn’t really take advantage of those situations. Matt [Ryan] had some time to throw and get to his first, second, third read. They ran some very good pick routes and got free. We have to clean up some of our … if we're going to play man-to-man, clear up some of our combination coverages and go from there.

“But it’s going to be a great challenge. Evans is a heck of a receiver. Obviously, DeSean, [Chris] Godwin and O.J., so we [have to] cover them up, mix in some zones and rush the passer.”

The secondary recently has been somewhat in flux. Starting cornerback Quinton Dunbar has missed two games with a nerve issue in his lower leg and has not practiced this week. That left rookies Greg Stroman and Danny Johnson filling in with varied degrees of success. The team brought in Pro Bowl safety Ha Ha Clinton-Dix at the trade deadline and he started that same week. Cornerback Josh Norman had played well after some early-season struggles, but was not at his best against the Falcons.

Fox Sports analyst and former NFL linebacker Chris Spielman said the rules and the ways offenses are constructed make it difficult for a team to consistently shut down these upper-echelon receivers. Sometimes a win is simply eliminating the big play and tightening up once offenses reach the red zone. Spielman, who is scheduled to call the game, also stressed the need for the secondary to get help from the defensive line in the form of quarterback pressure.

“It’s tough to cover guys in this league,” Spielman said. “Guys are going to get yards.

“They’re going to get challenged. If you can get pressure, especially if you can get it with four, that gives you seven on the back end, and … [have] good open-field tackling.”

Tampa Bay features the No. 1 passing offense in the league, averaging 356.6 yards per game, and its 446.8 total yards per game ranks No. 2. They are the No. 8 scoring offense with 28.6 points, but the run game has been nonexistent with 90.1 yards, 30th in the NFL.

Atlanta brought a similar unbalanced attack to Washington, but were able to run on the Redskins and moved the ball without much resistance.

Defensive coordinator Greg Manusky said he thinks last week’s result was more fluke than a new norm.

“I think, overall, there was just a lull,” he said. “I think, over a season, you’ve got those ups and downs and we just happened to have one of those downs. So, we’ve got to make sure we rebound back from a bad performance and go into this week.

“The best thing . . . about it, when you do have those bad performances, usually the guys focus a little bit more and they’re focused in.”

More Redskins:

With a banged up offensive line, the Redskins need big-yardage plays now more than ever

‘I know what he’s going through’: How Jon and Jay Gruden get each other through the season

Jamison Crowder returns to Redskins practice, but status for Bucs game remains uncertain