OWINGS MILLS, Md. — Baltimore Ravens offensive lineman John Urschel, the NFL’s mathematics expert, abruptly announced his retirement from football at the age of 26 on Thursday, just before the first full-team practice of training camp.
His decision, which was announced by the Ravens, comes two days after a medical study indicated that chronic traumatic encephalopathy, known as CTE, was found in 99 percent of deceased NFL players’ brains that were donated to scientific research.
A team source said Urschel’s decision was linked to the results of the study.
Urschel left the Ravens facility before practice without making a statement.
“This morning John Urschel informed me of his decision to retire from football,” coach John Harbaugh said in a statement. “We respect John and respect his decision. We appreciate his efforts over the past three years and wish him all the best in his future endeavors.”