San Francisco 49ers head coach Kyle Shanahan spoke with reporters after the team's 17-9 preseason victory over the Dallas Cowboys. Here is everything he had to say.

Transcript provided by the San Francisco 49ers Communications staff.

Opening Statement: "Injuries I got from the game: [T Shon] Coleman left with an ankle, [DL] D.J. Jones with a knee, [RB Raheem] Mostert with a concussion, [OL Najee] Toran had his hand checked after the game and [S Marcell] Harris left with a stinger."

Did QB C.J. Beathard come out because of his--?

"He came out because of his thumb. (Actually), he didn't come out because of his thumb, but he hurt it on his last play."

Were you going to play QB Wilton Speight anyway?

"Yeah. We were going to the next guy anyway."

Coleman's injury looked serious. Did he have any information on it?

"No, I saw what you guys saw though. Looked serious, but I don't know yet."

How long are you expecting WR Trent Taylor to be out?

"We're hoping for Week One, not counting on it, but hoping for Week One."

Did that catch you guys off guard?

"Yeah, definitely, and him also. He was having a hell of a camp, and it was disappointing to hear, but fortunately, it won't be the year. I think that's about four weeks from Week One. It's usually a four to six-week injury, so we'll see how it goes."

Is that a Jones Fracture?

"Yes."

Isn't that kind of a serious thing?

"Yeah, it is. We're lucky we caught it when it was just a stress fracture. Usually when you go with that for a little bit, it ends up breaking and being a lot worse. He was complaining about a little pain, so we got the X-Rays, saw a little fracture in there. Then you have to make the decision, whether you want to go with it and risk it until it breaks? We decided to do it now, so it could be more of a four to six-week injury instead of an eight to 10-week injury."

How much had WR Jalen Hurd worked in the slot so far and is it natural to think it might be a lot more now?

"He's worked a lot in the slot and he's also worked a lot outside at Z, so he's been doing both. I know he played mainly in the slot in college, but we move most of our guys all over and he's capable of doing both."

What have you seen from him just over the last couple weeks in terms of the progress he's made?

"He wasn't out there in OTAs, so we were eager to get him out there and he made it out for practice one (of training camp) and he's been in everyone since. He plays very physical. He's in good shape, runs hard, has strong hands. Just trying to pick up the offense. Had a few mistakes today, but played pretty well and it was a good first night for him."

Was one of those mistakes on the interception with QB C.J. Beathard?

"No. Everyone had a few mistakes tonight."

Can you talk a little about WR Deebo Samuel and how he played and what you've seen over the past two weeks?

"Similar to college and how he's been since he's gotten to practice, the game, it's just not too big for Deebo. He's very competitive. He's a good wide receiver, but he's one of the more physical guys out there. We got him a run on an around where you could see a little bit of his physicality. Very similar to Jalen, their bodies are a little bit different but same type of mentality."

Why did you start QB Nick Mullens tonight?

"We plan on starting C.J. next time. We had to pick and we went with Nick first. He was the last one to finish the season."

What did you take away from the quarterbacks' performances?

"I thought both of them made some good plays. But I thought both of them, each one of them had one really bad play. I thought they threw a pick that was pretty easy to see. I think (with)_Nick, the backside linebacker got it in zone and I think it was C.J., a robber safety came down and got them. After that I thought both of them played pretty well, while under a lot of duress too."

Was there a separation between the two of them after one game?

"No."

You said C.J. is going to get the next start, but is QB Jimmy Garoppolo going to--?

"Yeah, Jimmy should be ready to go next week, but we'll let C.J. go ahead of Nick for the second game."

DB Tarvarius Moore ended up playing a big chunk of the game because of safety issues. How do you think he did?

"From what I saw, it looked good. I saw him flying around. I saw him make a few plays. We'll see the tape, that penalty at the end, I thought, was very unnecessary to give them that cheap 15. I'll see it on the tape, from what I saw, he didn't have to do that. We played a lot of guys tonight. We were able to sit a lot of starters. The backups came in fairly early and got to play a lot more, especially with losing Colbert in that game. We had to keep those guys out there a little bit longer. That's always good to do as long as you can get through it healthy, we'll have a lot of tape to watch and excited to see it with them tomorrow."

Would you have, if it hadn't been the end of a preseason game, would you have challenged that CB Dontae Johnson--?

"I definitely would have if it wasn't under two minutes. So, I couldn't. That's the only one today I would have. All the others, it's got to be an obvious one and that's the one I definitely would have challenged. I was hoping the NFL would, or whoever is supposed to under two minutes but they didn't.

Do the penalties bother you in a preseason game or no because it's mostly--?

"No, of course it bothers you. We'll look at them very hard tomorrow. Any time you have a game where you have 18 penalties and the other team has five, we should look at it hard. It's very hard to win that way. It's very frustrating, but we'll look at them hard and see if all of them were stuff we can control."

Dre Greenlaw seemed to have a nose for the ball tonight, can you talk about that?

"Yeah, it's showing up that way in camp too. He always seems to be around the ball in the run game and the pass game. From what I saw, he made a few plays out there and I'm sure I'll see a little more when I watch the tape, but seemed pretty encouraging how he played tonight."

You haven't rested that many guys in the previous preseason openers, why did you do that tonight?

"Just have a better feel for our team and the guys who have established themselves. There are some guys that, you have to prove yourself all the time, but we want to take care of a lot of guys too and with having four of these and we have a few more established starters in certain areas. The most important thing is to get our team the best they can be by Tampa, but we also hope our team can be ready for Tampa. Anytime we have a chance to rest guys and keep them healthy, we're going to try to do it."

Did you have an understanding with Dallas Cowboys head coach Jason Garrett in a situation like that you guys weren't going to go for two?

"No, Jason and I are friends, but we never talked until after the game. I just pray to God they don't and I pray to God I'm never in that situation. I saw Bruce Arians was in it yesterday. That's a tough one to be in. You've got to go for two. You can't try and not to win, but you don't want to go to overtime at all."

Why did you go to play WR Dante Pettis tonight and what did you see from him?

"I wanted him to compete. We're trying to see who our starting receivers are and I wanted to get him a chance to get out there. We'd decided before the game that we were going to sit [WR] Marquise [Goodwin] and we were going to sit [WR] Trent Taylor. Trent ended up getting hurt, so we had to do that anyway, but everyone else, we wanted to find out more about. Dante has a lot of room to grow. He can still get a lot better. So, can a lot of the other guys."

What was your view of DB Adrian Colbert's hit and what's the message going to be?

"We've just got to learn from it. I saw it live and it did seem like his helmet hit his chest and he led with his helmet which is a penalty. It's unfortunate he got ejected. I know his intent, it's a bang, bang play and he's playing fast and trying to stop them on third down. By no means, is he trying to do that. it's tough to run that fast and tackle people and keep your head back, so we've got to learn from it, we've got to coach it. It was tough for him to get ejected there."

From your understanding, it came from New York?

"Yeah, it came from New York. Yep."

What did you think of WR Jalen Hurd tonight?

"I was excited about him. He got a few opportunities and when he did, he capitalized on them. On the keeper, when he got in, and on the touchdown on the fade in the end zone. He did a good job, so has a lot of room to improve, but it was a good first night."

It's the first time you're seeing Mitch Wishnowsky in a game.

"From what I saw out there, I thought we punted very well. I know that one kick, he hooked it left a little bit too far and got out of bounds. You don't want to see that. Hopefully we can get him to hem up his sleeves a little bit. He looked awkward in a jersey. I'll talk to [49ers equipment manager] Jay Bird [Brunetti] about that. But, obviously, room to improve but I like having him out there."