O’Leary had to have a 100% blockage removed from an artery in the right side of his heart. It was discovered after O’Leary had a heart attack after feeling pain in his left arm while working out.
O’Leary will have to miss this season despite signing with the Raiders as a free agent back in March. He’s hoping to return to football in 2021.
“I feel good,” O’Leary said. “I feel better than I did before. I’ve got to be on blood thinners for six months to a year. That’s really the only reason now why I can’t play football. If I [got cut], they said that would be the biggest problem, wouldn’t be able to stop the bleeding.”
Las Vegas placed O’Leary on the reserve/non-football injury list last month.
O’Leary, 27, was selected in the sixth round by the Bills in the 2015 NFL draft. However, he was waived at the start of the season and later added to their practice squad.
O’Leary re-signed with Buffalo in 2018 to a one-year exclusive rights deal but was among their final roster cuts coming out of the preseason. From there, he signed on to the Dolphins’ practice squad and returned to Miami on a one-year extension.
Unfortunately, the Dolphins released O’Leary last year and he finished out the season as a member of the Jaguars. The Raiders signed him to a contract this past March.
In 2019, O’Leary appeared in 12 games for the Jaguars and Dolphins and caught 18 passes for 109 yards receiving and one touchdown.