AP

Colts quarterback Andrew Luck had an injury-plagued season in 2015, but injuries weren’t the only problem.

Luck admitted in an interview with ESPN that he did not play well last season, even when he was healthy.

“Injuries aside, I was not playing very good football — before they happened,” Luck said. “I’ve got to be better. Toward my last couple games I felt like I was playing much better, trending in the right direction.”

The game when Luck suffered his season-ending kidney injury was also his best game of the season: He completed 21 of 36 passes for 252 yards, with two touchdowns and no interceptions, while adding 34 rushing yards against the best defense in the league in a win over the Broncos.

But other than that game, Luck’s season was a mess. He finished the year with a career-low 74.9 passer rating, and the Colts went just 2-5 in the games he started (a record that looks even worse when you remember that the Colts went 5-3 with Matt Hasselbeck and 1-0 with Josh Freeman).

In 2016, the Colts need Luck to be healthy. They also need him to be better.