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Ranking the NFL's second-year breakout candidates: 15 players who could become stars

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Why Tua Tagovailoa must step up in his second year (1:24)

Max Kellerman argues the Dolphins could be Super Bowl contenders if Tua ups his game this season. (1:24)

While Washington pass-rusher Chase Young and Chargers quarterback Justin Herbert -- both top-six picks in the 2020 NFL draft -- didn't waste any time showcasing their talent at the NFL level last season, most rookies stumbled through a year of hopefully correctable errors. The Class of 2020 endured one of the most unique first years ever amid the coronavirus pandemic. Now, that group will have a chance to settle down and soak in a normal offseason.

Which second-year players could break out in 2021? We ranked the best 15 sophomores who could star in 2021 after showing only glimpses of their potential last season.

When Pro Football Focus ranked every team based on rookie production, the Bengals, Colts and Bucs led the way, but as you can see with one of the top players on this list, there's a way for Cincinnati to take the next step: