That's why new offensive coordinator Charlie Stubbs says that spring practice has been a productive affair.
"It's been productive because the coaching staff has been able to work together and coach together," Stubbs said. "We've tried to lay a foundation with the players this spring and I feel like if we can just finish off with a very good week of practice we've laid the groundwork for the basis of what we're going to do."
Spring practice has also given Stubbs a chance to get to know his personnel better and see exactly what the players are capable of doing on the field.
"I've really gotten a feel for the guys. Not just the receivers, but all the offensive players to see what kind of weapons we do have and what their strengths are," said Stubbs.
Practice this spring has been a very physical affair. And with two scrimmages behind them, the new Louisville coaches, particularly Stubbs, believes he's identified a few ‘new' guys who have emerged this spring and appear ready to contribute next season.
"It's been a tough spring practice," Stubbs said. "There have been some guys, but I'd hate to name names right now. But there's been quite a few guys that I feel like are stepping up and maybe will be contributors this fall.
"And you've got to have those guys. That's what you win championships with – it's not just the so-called playmakers, it's the other guys. And we know in a long season injuries are going to happen. So you've got to have people to step up and fill those voids without having a big drop off."
Spencer has enjoyed an excellent spring and has moved up Louisville's depth chart. Stubbs likes Spencer's versatility and thinks he'll fit into well to his offensive system.
"Sergio has been a bright spot," Stubbs said. "He fits a lot of things I like doing. He's been consistent and he's playing fast every day. He's kind of sparked my interest in just using his skills.
"We have a lot of variations of runs, not just inside runs, but outside runs, plus we (throw) to the backs quite a bit. And he's shown that he has good hands and that he can play out in space. I could do some things to get him out of the backfield and maybe we could get a good matchup."
Despite learning a new system, Louisville's offense has been extremely efficient this spring. That's been a pleasing development for Stubbs.
"We're playing pretty clean – I'm talking about no turnovers in two scrimmages and very few penalties," Stubbs said. "If we can keep that going, that's the first thing about any offense is not to beat yourself. So far, so good."
Stubbs has installed about 50-60 percent of his offense this spring. He's said he isn't sure whether or not he'd get his entire offensive package in before the start of next season. With Brian Brohm, Harry Douglas and Mario Urrutia, that's probably not a bad thing.
"We'll have enough in," Stubbs said. "We have a tremendously fast offense at certain positions and I want them to play fast and not be confused. So I'm going to make sure I pull back more so I can utilize their athletic ability with no hesitation."
As spring practice nears its conclusion, Stubbs wants to see the offense finish strong with an efficient, error-free spring game.
"What the focus for me is just to play clean again," Stubbs said. "Take care of the ball, take what they're giving us, be able to run it and throw it, get a lot of guys involved and then get out of the game healthy."
If the Louisville offense can do all that, it will indeed have been a successful and productive spring practice.