Iowa quarterback Brendan Sullivan will miss this week's game at Maryland and likely the rest of the regular season with an ankle injury, sources confirmed to ESPN on Monday.
Cade McNamara, who opened the past two seasons as the Hawkeyes' starter but has been out since late October with a concussion, is set to start this week against the Terrapins. McNamara, a transfer from Michigan, is listed on Iowa's depth chart with sophomore Jackson Stratton as his backup. Sullivan is not listed.
Sullivan, a transfer from Northwestern, sustained the injury during a Nov. 11 loss at UCLA. He had 344 passing yards with two touchdowns and two interceptions and 144 rushing yards and four scores this season.
McNamara has completed 60.5% of his passes for 1,017 yards with six touchdowns and five interceptions this season. Sullivan took over as Iowa's starting quarterback after McNamara sustained his concussion in an Oct. 26 game vs. Northwestern.
McNamara missed most of last season with an ACL tear.
Iowa is 1-3 on the road this season. Former Iowa offensive coordinator Brian Ferentz, the son of Hawkeyes coach Kirk Ferentz, is serving as a senior offensive analyst for Maryland.
247 Sports first reported that Sullivan is likely to miss the rest of the season.