Watching a replay of the preseason finale at Jacksonville might make his decision an easy one.
Yates had shown little in the team's first three preseason games, completing 39.4 percent of his passes, with no touchdowns and two interceptions. Second-year player Sean Renfree posted better numbers and seemingly had an edge in the competition.
"Things worked well tonight," said Yates, who spent his first three seasons in Houston. "It's taken me a little time to get use to this offense coming in so late. I was playing catch-up there in camp and preseason, and I was getting pretty frustrated with the way I was playing in some of the games. But I kept working hard, and coach gave me some more chances to do things."
Yates completed 15 of 20 passes and was sacked twice.
"I thought T.J. had an outstanding game," Smith said. "That quarterback battle has been an interesting one and that's going to lead us into a number of very difficult decisions."
Renfree was 9-of-12 passing for 62 yards.
Jacksonville held out a number of first-teamers, too.
With Henne resting, first-round draft pick Blake Bortles got the start for Jacksonville and extended his impressive preseason.
Bortles completed 4 of 6 passes for 86 yards, including a 57-yard TD strike to fellow rookie Marqise Lee on the first play of the second quarter.
"I probably waited too long to get to Marqise, but he did a good job of beating his guy off the line, getting downfield and making a play," said Bortles, the third overall pick in May's draft.
Bortles completed 32 of 51 passes for 521 yards in four exhibition games, with two touchdowns and no interceptions.
Despite Bortles' steady improvement, he's a lock to open the season on the bench behind Henne.
"As a competitor, you want to play," Bortles said. "You want to go play, obviously, but I think you have to understand your role. I understand mine. Chad's our starter and I'm the backup. Now my role kind of shifts. I've got to go get try and get work in and get better at practice, do stuff for the defense on scout team and improve in those ways."
Henne ended the preseason 25-of-38 passing for 230 yards, with a touchdown and no interceptions.
More pressing questions for Jacksonville involve the offensive line.
Brewster could go from being the starter to being on the street when final roster cuts come Saturday.
"When you have a couple bad snaps in the first game and then you throw a low one back there in the last game, I mean, yeah, it's not a comforting feeling," Brewster said. "But I know I can play in this league. I have played in this league.
"It's tough, so we'll see. Whatever happens, happens. I can't blame anybody but myself, and whatever the problem is, I've got to move beyond that and not let it keep on."
Copyright 2014 by The Associated Press