Nate Kaeding has been a fan of Jake Rudock's performance so far this season, but is he warming up to C.J. Beathard? Stephen Schmidt / Iowa City Press-Citizen
Iowa running back Damon Bullock and receiver Matt VandeBerg remain questionable for the Oct. 11 game against Indiana.
Neither made the trip last week to Purdue after suffering unspecified injuries during practice.
"I don't expect either of them to practice today or tomorrow or Thursday," coach Kirk Ferentz said during Tuesday's Big Ten teleconference. "They're both getting better.
"Where they're at for our next game, I'm just not sure. Hopefully, we'll have a better handle on that next Tuesday."
Nate Kaeding talks about why Coach Ferentz plays who he does, Michigan Wolverine blues, and Marshall Koehn's improved confidence. Stephen Schmidt / Iowa City Press-Citizen
Bullock has 52 rushing yards on 20 carries this season, but also is a viable receiving target, with 15 catches for 92 yards.
VandeBerg has three receptions for 62 yards and is a key contributor on special teams, returning punts.
"I think they both have a realistic chance to be ready," Ferentz said. "We'll just have to look at it day by day."
Ferentz also said Marshall Koehn has solidified his place as the Hawkeye kicker.
Koehn struggled early this season, missing three field goals from inside 40 yards, but is now five of eight on the year.
"We made the decision last week that Marshall would handle all the kicking in that game," Ferentz said. "We'll let the guys continue to compete, but hopefully, we're seeing Marshall gain a little bit of confidence.
"He has a little different aura about him now than he did a month ago."
Ferentz had said the job was Koehn's going into last week's Purdue game. The confirmation came when he kicked a 28-yard field goal, since Mick Ellis had been designated the inside-30 kicker after Ball State.
Ferentz said the punting situation remains up in the air. Dillon Kidd and Connor Kornbrath are competing for the job.