Linebacker Drue Tranquill was carted off with an ankle injury, and the initial belief is he broke his ankle. David Kohl-USA TODAY Sports

The Chargers escaped with a narrow victory over the Bengals in Week 1, but they didn’t make it out unscathed. Linebacker Drue Tranquill was carted off with an ankle injury, and the initial belief is he broke his ankle, a source told Adam Schefter of ESPN.com (Twitter link).

Assuming that’s the case, then his season is likely over. It’s a tough break for the young Notre Dame product, who was drafted in the fourth round last year. He started three games while appearing in 15 and playing around 40 percent of the defensive snaps. He was ticketed for an even bigger role this time around, which makes this a devastating blow.

The Chargers’ defense is loaded with talent on the defensive line and in the secondary, but linebacking is the one question mark. Guys like Kyzir White and first-round rookie Kenneth Murray will be even more important now.

The unit played well and mostly held Joe Burrow in check Sunday, but this isn’t the first significant injury to the defense. All-Pro safety Derwin James, of course, was just lost for the season with a knee injury. Another year, another crop of health issues for the Chargers…

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