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It's hard not to improve when you're coming off a 1-15 season and you have about a trillion dollars to spend, but the Cleveland Browns deserve credit for their prudent approach to free agency.

They didn't overpay an aging, overrated quarterback just because they're seeking a franchise signal-caller, choosing instead to bide their time ahead of a draft in which they hold five picks in the top 65 and two in the top 12.

That doesn't mean they didn't go on a shopping spree. They made life considerably easier for whoever that quarterback will be by revamping an offensive line that, according to Pro Football Focus, was responsible for a league-high 33 sacks last season.

The Browns signed arguably the top guard and center on the free-agent market, bringing in Kevin Zeitler (pictured) from the Cincinnati Bengals and JC Tretter from the Green Bay Packers respectively. Neither has turned 28, and both are coming off exceptional seasons.

To boot, they added a talented and experienced new No. 1 receiver in Kenny Britt—a 28-year-old former first-round pick coming off a breakout season in which he caught 61.3 percent of the passes thrown his way by the Los Angeles Rams' bad group of quarterbacks.

Britt merely replaces Terrelle Pryor, who also had a 1,000-yard campaign in 2016 before jetting to the Washington Redskins in free agency. But he's still young, and he's gone over 700 yards in five of his eight seasons. He's more of a known commodity.

Most importantly, the Browns did all of that without selling off any draft picks. In fact, they gained a 2018 second-round selection from the Houston Texans as compensation for absorbing bust quarterback Brock Osweiler's bloated salary with cap space they wouldn't have used anyway.

As a result, one of the league's most improved rosters is likely to continue to receive more upgrades in the near future.

With the Pittsburgh Steelers basically idle, the Bengals losing Zeitler and left tackle Andrew Whitworth and the Baltimore Ravens letting key offensive contributors Kyle Juszczyk and Ricky Wagner walk, there's no doubt the Browns are March winners of the AFC North.