Dallas quarterback Kellen Moore broke his right ankle in a training camp practice Tuesday, likely forcing the Cowboys to look outside the organization for an experienced backup.
The injury happened during one of the last plays of 11-on-11 work in the second full-pad practice of camp. Guard Jared Smith was pushed back by defensive lineman Lawrence Okoye and stepped on Moore's ankle.
Without Moore, there isn't a backup behind Tony Romo with any NFL experience. Dallas drafted former Mississippi State quarterback Dak Prescott in the fourth round this year, and undrafted free agent Jameill Showers is in his second year. Prescott and Showers have been sharing third-team work.
The injury came four days after owner Jerry Jones declared his confidence in Moore, who made the first two starts of his career in the final two games last season with Romo sidelined by a broken collarbone. He lost both as Dallas finished 4-12.
"It's regrettable," Jones said after Moore was injured. "We'll just basically take a look at it and address it from here."
Jones said in his camp-opening news conference that the Cowboys weren't interested in Nick Foles, a former rival with Philadelphia. Foles, with 35 starts over the past four seasons, was released by the Los Angeles Rams last week. The Rams took California's Jared Goff with the top pick in this year's draft.
Moore threw for 435 yards and three touchdowns in the season finale against Washington, but had six interceptions in three games. The first three came in his first NFL appearance, when he replaced the ineffective Matt Cassel in the first half of a loss to the New York Jets.