ALAMEDA — Oakland Raiders first-round draft pick D.J. Hayden's comeback from a near-fatal practice injury last year was dealt a setback when he was hospitalized with a stomach injury that is expected to keep him sidelined until at least training camp.
Coach Dennis Allen said Tuesday at the start of Oakland's second week of OTAs that Hayden first felt symptoms last Tuesday or Wednesday. The cornerback was hospitalized late last week and had surgery to remove scar tissue from the abdominal region. The Raiders said they don't know when Hayden will be released from the hospital.
Allen said he did not know if the latest injury was related to the torn blood vessel that nearly killed Hayden last November after a practice collision with a teammate at Houston.
"We can't rule that out, obviously, but right now I don't know exactly what the correlation is to it," Allen said. "But we don't anticipate it being an issue."
Hayden was rushed into surgery last year for a tear of the inferior vena cava, the large vein that carries blood from the lower half of the body to the heart, after the collision. Doctors had to cut through Hayden's sternum to save him. The injury is 95 percent fatal in the field, according to doctors, and is most commonly associated with high-speed motor vehicle accidents.
The Raiders selected Hayden 12th overall with their first first-round pick since 2010 in hopes of adding a major piece in an effort to rebuild the defense.
Hayden played 22 games at Houston, intercepting six passes that he returned for three touchdowns. He also recovered three fumbles and forced six before his senior season was cut short by the injury.
Hayden made his return to the field at a three-day rookie minicamp earlier this month and also participated in part of last week's OTA before being sidelined.
"It's obviously not a good thing, from a football standpoint," Allen said. "As a rookie, you need all the reps you can get and all the work you can get."