Giants, Cowboys and Eagles fans: Make sure your teams are boosting their defensive backfields during this NFL free-agent period, because the Redskins, after three free-agent signings yesterday, will be armed and ready for the coming season.

The team announced yesterday it reached deals with the Pierre Garçon, formerly of the Indianapolis Colts, and Josh Morgan, a D.C. native who left the San Francisco 49ers. The Redskins are also said to be pursuing another top free-agent receiver, the Denver Broncos’ Eddie Royal. Combined with last week’s draft-pick swap to ensure they will land Baylor quarterback Robert Griffin III, the Redskins’ passing game seems to have turned from an anemic mishmash of middling quarterbacks and aging receivers into an ideal fantasy football team in just a matter of days.

The signings came, the Post’s Mike Wise and Mark Maske note, after the NFL slapped the Redskins with a penalty stripping the team of $36 million in salary-cap room over the next two seasons as punishment for improperly structuring contracts in the 2010 season.

But the fine appears not to have deterred Dan Snyder’s checkbook, which opened to the tune of $42.5 million over the next five years, $21.5 million of which is guaranteed, the Post reports. And while neither Garçon nor Morgan, both of whom have been in the NFL four seasons, have recorded a 1,000-yard season, the Redskins have high hopes, according to the Post:

Garçon, listed at 6 feet and 210 pounds, is a speedy wide receiver who will give the Redskins a deep threat. A product of Division III Mount Union College in Ohio, he has not recorded a 1,000-yard season, but the Redskins believe that he can develop into a legitimate No. 1 threat.

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[Morgan] had only 15 catches in five games last season, but totaled 96 catches over two seasons in 2009 and 2010. Morgan’s deal is worth $12 million over two years, a source said.

For Morgan, signing with the Redskins will be a homecoming as he seeks to bounce back from an injury-shortened 2011 season. Morgan attended H.D. Woodson High School in Northeast D.C., graduating in 2003 before heading to Virginia Tech.

And if the Redskins can close a deal with Eddie Royal, they’ll have landed another hometown player. Royal grew up in Alexandria and played with Morgan at Virginia Tech before being drafted by the Broncos in 2008, who at the time were coached by Mike Shanahan. While the Redskins’ talks with Royal halted last night after he started entertaining offers from other teams, the Post reported, sportswriters in Denver seem to believe the signing is a done deal.

Assuming Royal joins Garçon and Morgan in a new trio of young, speedy receivers, the Redskins will need to figure out whom to unload from their pre-existing corps of pass-catchers. Santana Moss, Jabar Gaffney, Leonard Hankerson, Anthony Armstrong, Niles Paul, Brandon Banks, Aldrick Robinson and Terrence Austin are all still under contract, the Post notes.