Feel free to look it up for yourself. He did better on the white board than any other player. As for his arm strength...
Mayock: "I thought Baker Mayfield was fun to watch. I think he embraces the limelight. Some guys kind of get worried about it, I think he comes out there and says, hell, 32 teams are here, man, let's rip it, let's have some fun.
"And he did and I thought, again, as the day went on and he got into his comfort level, intermediate and deep routes, several people said to me, including David Carr down on the field, he's like, Mike -- we went to a break -- and he said, man, his arm's better than I expected and I thought the same thing coming off my first exposure to him when I watched tape back in the fall.''
Carr: "Baker's arm is more live than I expected. He's got a little bit more zip than I thought he would have on it because even the deep throws that he made to the sideline were not a lot of arc and he was able to get it out there. I thought he was going to have to be a guy that would have to anticipate, throw a little early. But these in-cuts that he threw, he threw three really good tight spiral footballs down there. So I'm pleasantly surprised by what I've seen from Baker so far."
Carr: "It's a similarity that's probably a little bit of a stretch, but you see a lot of Drew Brees when he's moving around. I think even a little more velocity with him, especially when he's throwing right before Rosen, and you can see he's right there with him.''
http://www.cleveland.com/browns/index.ssf/2018/03/baker_mayfield_josh_rosen_josh.html