Brian Hoyer is competing with Ryan Mallett for the starting quarterback job.
Mallett started a pair of games as a Texan last autumn.
Hoyer was the starter in Cleveland 13 times last season.
Ask either one about this year's competition with the other, and each gives a similar answer.
"I'm not looking at it like I'm competing against him," Mallett said on Saturday. "Obviously that's the situation but for me it's about making myself better to help the team win."
Hoyer echoed Mallett with "I'm also competing with myself."
Head coach Bill O'Brien will make the ultimate decision on who starts, and after one day of training camp, he said neither signal caller has an edge over the other.
"I think it was a typical first day," O'Brien said. "I thought both guys had some good plays. Both guys had some plays they'd probably want to have back."
Playing mistake-free is a big point of emphasis for both quarterbacks, and Hoyer described what he wanted to improve upon most.
"I think for us as an offense we need to work to eliminate the pre-snap penalties, jumping offsides, and the delay of game at the end there," Hoyer said. "So eliminate those and give yourselves a chance to play."
"We have to just clean up little stuff and get better at those things," Mallett said.
Mallett, Hoyer and the Texans return for day two of training camp on Sunday morning. Practice starts at 8 a.m. outside at the Houston Methodist Training Center.
View photos from the first day of practice at #TexansCamp.