Training camps will be in full swing this week. The Hall of Fame game and the start of the preseason is only seven days away, and in just six weeks, the season begins with the Chicago Bears hosting the Green Bay Packers.Through free agency, the 2019 NFL Draft, and plenty of cuts and trades, much has changed since the New England Patriots triumphed over the Los Angeles Rams 13-3 in Super Bowl LIII in February. Which teams have improved the most over the summer? We take a look at five franchises who have made positive moves…Cleveland Browns (2018 record: 7-8-1)The turnaround began last season, when head coach Hue Jackson was fired midseason. The Browns had a 5-3 record in the second half of the year, and finished with their best record since 2007.This offseason, they turned it up a notch and with the addition of Odell Beckham Jr, might have turned themselves into contenders. Olivier Vernon, also acquired in that trade with the Giants, joins incoming free agent Sheldon Richardson to improve the defensive line. General manager John Dorsey also took a chance on released Chiefs running back Kareem Hunt, who is suspended for the first eight games of the…