Not only does McCluster boast a similar skillset as a receiver out of the backfield, but his familiarity with the Chargers' system gives him an advantage not often seen for someone signed midseason. McCluster played under Ken Whisenhunt in Tennessee the past two years, so he is well versed in what the offensive coordinator brings to the table. Furthermore, Tight Ends Coach John McNulty and Wide Receivers Coach Nick Sirianni also spent time with him during respective stints with the Titans and Kansas City Chiefs.

"The play calling is coming kind of easy for me with Coach Whisenhunt," he said. "Having (been) in that system for a year, I came in and pretty much knew exactly what I was doing (today). There are some tweaks here and there but for the most part it's the same thing…. (It's a) very quick transition. I fell asleep studying last night. I went to sleep about 7 o'clock and woke up at 3 this morning so I figured since I'm up I might as well be studying. That is how I have been trying to adjust."

While McCluster's experience in the system and physical skillset makes him a natural fit as a versatile option out of the backfield, it's now up to him to deliver on the field. The next few days will be a crash course for the 5-8, 170-pound running back to get ready for the Indianapolis Colts, but he's doing everything in his power to chip in as soon as possible.

For example, McCluster says there were three occasions where he and Philip Rivers weren't on the same page. While that is to be expected in their first time on the field together, the pair stayed after practice to work out the kinks.

"(Building a rapport) is going to happen through practice," he said. "After practice we stayed, ran about three routes that we missed today and tried to get on the same page with things. I think it is about repetition."