Both attended the Scarlet Knights' junior day, and during the fall the Scarlet Knights coaching staff attended one of DePaul's games.
But what McCarthy and Golz didn't know was how they measured up against the rest of the talent in the northeast, but they learned that during the New Level Athletics Elite Linemen Challenge last week.
And both performed well, although McCarthy did so as a defensive lineman despite getting his recruiting attention for his play as a right guard.
"I came here to better myself, prove myself and find some things I can improve on," McCarthy said. "I need to improve on dipping my shoulder, getting low, but my best thing is my ripping and my speed."
McCarthy showcased his speed off the edge, but the 6-foot-3, 265-pounder believes his future is on the offensive line. Among the schools recruiting McCarthy are Rutgers, Pittsburgh, Connecticut and North Carolina, but he knows the Scarlet Knights the best.
"I came up here for junior day," he said. "It's a good facility. All the freshman and sophomores stay in the same place so they can bond with each other. It's a good environment, and I feel like I can fit in up here.
"I'm looking for a family so I can go there and we can just bond, and everyone know each other."
The 6-4, 290-pound Golz was one of the better offensive lineman in the camp. He projects as a guard in college, and has the frame to carry the needed size.
Golz is making the rounds in the northeast. He already attended junior days at Boston College and Rutgers, and he is planning a trip to Connecticut.
"BC was really nice," Golz said. "It's a nice school. It was just what I wanted. It was the kind of school I like. It was more homey, it felt smaller, more close together. It's not as big as some of the other schools, but every school is different."
Golz is being recruited to Rutgers by assistant coach Chris Hewitt, and he enjoyed his junior day experience in Piscataway.
"It was great. It's a nice community, and it's close to home," Golz said. "That's something I'm going to keep in the back of my head when I make my decision. It was all very nice."
Golz knows what he is looking for in a college.
"I want a close together kind of school," Golz said. "That's what I feel my heart is set on. I'm from a small area. I don't want to go to a big school where there's too much stuff and I can't keep my head in the school work."