Los Angeles Chargers quarterback Tyrod Taylor suffered a punctured lung while receiving a pain-killing injection from a team doctor before Sunday's game against the Kansas City Chiefs, according to ESPN's Adam Schefter.
Taylor was scratched just before kickoff Sunday when the team said the veteran quarterback experienced breathing difficulties and later went to the hospital.
Taylor was hospitalized briefly, though he might not be ready to replace rookie quarterback Justin Herbert just yet.
According to Schefter, doctors have advised Taylor to stay off the field "indefinitely." The NFL Players Association is investigating the situation.
"Our medical and legal team have been in touch with Tyrod and his agent since Sunday collecting facts," George Atallah, the assistant executive director of external affairs for the union, tweeted Wednesday. "An investigation has been initiated."
Chargers coach Anthony Lynn said Monday that Taylor will remain the starter as long as he's healthy, but there's no indication whether the 31-year-old will be ready for Sunday's home game against the Carolina Panthers.
In his debut as a starter, Herbert was unfazed and nearly led the Chargers to an upset of defending Super Bowl champion Kansas City before the Chiefs prevailed 23-20 on a 58-yard overtime field goal by Harrison Butker.
Herbert, the first-round pick (sixth overall) from Oregon, completed 22 of 33 passes for 311 yards and one touchdown along with one interception. He also rushed for a score.
Taylor started the Chargers' season-opening 16-13 victory the Cincinnati Bengals and was 16-of-30 passing for 208 yards. An MRI later in the week showed he suffered two cracked ribs in that contest.
--Field Level Media