Anderson. Booker. Charles.

It’s easy as A-B-C.

With Tuesday’s free-agent signing of two-time All-Pro running back Jamaal Charles, the Denver Broncos added piece No. 3 to a backfield that should have offensive coordinator Mike McCoy singing, “Do-Re-Mi.”

Come on, come on, come on let me show you what it’s all about…

Power, speed and versatility are the branches of the successful running game tree, and with the addition of Charles the Broncos have a trio of backs who bring all three skills to the table in varying degrees.

It’s no coincidence that C.J. Anderson loves to bowl (and is incredibly good at it, too). Out of the backfield, Anderson has a habit of sending defenders flying like the 10 pin on the final roll of a turkey. He’s strong, low-to-the-ground and the more space he has, the more speed he picks up and dangerous he becomes. And don’t sleep on that speed. Anderson can cut loose for the long one, as we saw on several occasions in 2015 en route to the Super Bowl. (There are still New England Patriots chasing him into the end zone in overtime). Last but not least, Anderson has greatly improved over the past two years as a pass-catcher. It’s still his weakest attribute as a running back, but he’ll step outside to make a catch and run when needed.

Now, when you’re born with a name like Booker, don’t you have to grow up to be a running back (or a track star)? (Thankfully for the Broncos his parents put him in shoulderpads.) Booker may not have the breakaway speed of previous Broncos backs in his role – guys like Ronnie Hillman – but he’s got another gear that makes him dangerous once he reaches the second level. He’s also strong enough to battle into that second level, where other backs weren’t. We saw flashes of his pass-catching skills last year, and with a full year of NFL strength and conditioning (not to mention on-field experience) under his belt Booker could be primed for a breakout sophomore season. Especially with a bolstered offensive line and McCoy calling plays.

Anderson (Cal) and Booker (Utah) went to school to learn, but they’re about to get a football education from Charles unlike any they’ve had previously. A nine-year veteran in the league with nearly 10,000 yards from scrimmage to his credit, Charles has seen it all. And now Charles is in charge of the running backs room with some A-level talent around him. In his prime, Charles was arguably the best combination of power, speed and versatility in the league. He’s also got a football IQ that helped propel him to the top of the NFL’s all-time list in yards per carry. Even if he’s not at the top of his game physically after two ACL surgeries and now into the running back “death zone” of his 30s, Charles brings a veteran presence to the running backs room that will surely add up.

Mike McCoy found success in the running game with Tim Tebow, Knowshon Moreno and Willis McGahee carrying the ball.

He can surely do it easy as A-B-C with the 1-2-3 of Anderson, Booker and Charles.