Kansas City Chiefs quarterbacks coach Matt Nagy has been impressed by Alex Smith during the off-season.

The Chiefs gave up their second-round draft pick to acquire the former San Francisco 49ers quarterback.

Nagy told the Kansas City Star: "He's been everything that we thought he was. He's a true professional. He's in his [playbook] every day. He's always asking questions, trying to get better. He's being a leader for the other [quarterbacks] as well.

"When he's out here on the practice field, he's a leader. The guys look to him. The quarterback position is so important to be that leader, whether it's vocally or by your play. He does both of that.

"Having him be able to do that and have some of these younger guys look up to him, that's what we need, and that's what we expected he'd have, and he does have that."

The Chiefs finished the 2012 season with the worst record in the league, winning just two of their 16 games.