SANTA CLARA — Brock Purdy isn’t necessarily a product of Christian McCaffrey, but he’s that much better when McCaffrey is on the field.

When McCaffrey plays, Purdy’s passer rating is 111.9 and his win-loss record is 18-4. When McCaffrey doesn’t play, Purdy’s passer rating is 93.7 and his record is 4-4. Strong contrast.

On Thursday, Purdy was asked about his chemistry with McCaffrey. Here’s what Purdy said courtesy of the 49ers PR department.

Q: Having RB Christian McCaffrey back at practice now for a second week, do you see any difference in what it does for everyone else? Does it lift everyone else? Just what does that mean for each training day?

PURDY: “Yeah, he goes hard, every rope, he does everything right. He doesn’t fight or anything. And so, when we see the standard that he’s playing at, for all of us, we’re like ‘okay man, Christian’s back ” and we just have to do our job really well and when we get him the ball let’s make sure the blocking is right. For me it’s how can I get him an accurate ball and transition so he can get as much YAC as possible? It’s like all those little things that you kind of start to see everyone raise their game with. And so, it’s crazy when a person of his caliber comes back what it does to our team and everyone that raises their game. So obviously extremely happy to have him back for everything he does for us. But more than anything, we’ve just gained so much respect for the way he goes about his business and for being such a great teammate that he is.”

Q: Going back to your chemistry with Christian McCaffrey. The throw to the right sideline that you kind of arced over. He said it was halfway before he looked when he looked back to catch it. Is it just your trust in him that you already built up from the past that you knew he would be there? Is that part of it?

PURDY: “Sure. Yeah. We’ve run that route so many times from camp to game before. And obviously, like that’s just a testament to his detail. I know where he’s going to be every time he runs it in practice on the air or against a defender, he’s giving me an indicator or it’s going to be subtle moves because he does that all the time. And so, for me at that moment, it was just about confidence because I knew where he was going to be and how he was running the route. And that’s the type of guy he is. He’s set up that kind of game for me so if it’s off schedule or something, I know where he’s going to be. And so, it’s just the chemistry and the trust that we’ve built and hopefully can we continue to have it moving forward.”

Q: Was it last week because he obviously hasn’t been training much in the last few months?

PURDY: “Yeah. We ran it last week in practice. But if we look back to last year and then the reps that he had in camp early on, those were all the reps that we’ve put together. So once he comes back, we say “okay this play is up again” and we’re like “okay sweetie.”

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