Deshaun Watson’s tumultuous tenure with the Cleveland Browns has taken another significant turn.

His third season appears to be over.

The embattled quarterback was carted off the field Sunday with a right Achilles tendon injury he suffered on a noncontact play against the Cincinnati Bengals.

Following Cleveland’s 21-14 loss, Browns coach Kevin Stefanski said it “looks like” Watson’s injury is serious and will end his season. The team was still awaiting test results.

Watson, who has not lived up to expectations in his two-plus seasons with Cleveland, went down without being touched with 1:26 left in the first half.

He dropped back to pass and when he planted, his right leg buckled and he dropped to the ground.

Watson immediately put his hands to his head as he lay on the field in obvious pain. Cleveland’s training staff rushed out to assist him and were soon joined by all of the Browns as well as the Bengals, who came over from their sideline to surround Watson and offer support.

Cleveland signed Watson to a fully guaranteed $230 million contract in 2022. He was suspended 11 games by the NFL in his first year with Cleveland, and his second season was cut short after just six starts because of a shoulder injury that required surgery.

DANIELS INJURED: Jayden Daniels suffered a rib injury that forced the Washington Commanders’ dynamic rookie quarterback out of their game against the Carolina Panthers on Sunday.

Daniels returned to the sideline at halftime wearing sweatpants and a hoodie and with his helmet nowhere in sight.

His mother, Regina Jackson, posted on social media the simple message, “He’s fine.”

Daniels, who ran for 46 yards on the Commanders’ first offensive snap, took multiple hits on their opening drive — including a head-over-feet tumble on that play. It was not clear exactly when he was injured.

The No. 2 pick out of LSU and 2023 Heisman winner appeared to be in pain when leaving the field following a third-down completion.

Daniels came into the game as the favorite to win offensive rookie of the year honors. He threw for 1,404 yards, ran for 322 and been responsible for 10 TDs in his first six games.