The Buffalo Bills signed a four-year, $120 million contract extension with star wide receiver Stefon Diggs on Wednesday, rewarding him for back-to-back Pro Bowl seasons with the franchise. Diggs, who was already regarded as a great wide receiver during his time with the Minnesota Vikings, has emerged as an elite wideout with superstar quarterback Josh Allen throwing him passes. The 28-year-old now boasts the third-largest receiver contract and third largest average annual salary among any player at the position in the NFL. Diggs trails only Miami Dolphins star Tyreek Hill and Las Vegas Raiders wideout Davante Adams in terms of wideout salaries. There aren't many who would put Diggs at the level of those two. However, the last two seasons show that in the right environment, Diggs is not just one of the best receivers in the NFL: He is the very best. That said, here are two reasons why Diggs will show he is the league's best wideout after signing his big contract.

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2 Reasons Stefon Diggs Will Prove He's Best WR After Big Contract

2. Diggs has Allen throwing him passes

Stefon Diggs is being paid like a top-three wide receiver in the league. Whether or not he is widely regarded as that caliber of a player among his position ranks, that is how the Bills have valued him. As such, he is chasing Hill and Adams on the field from this point on. Of those three stars, Diggs has the best quarterback situation by far. Adams and Raiders signal-caller Derek Carr played together in college, so there is a past chemistry there that could be reignited next season. However, Carr has never quite reached the highs that the Bills star quarterback has in past years. Hill is also dealing with a less-than-ideal quarterback situation, as he went from catching passes from Kansas City Chiefs quarterback Patrick Mahomes, widely regarded as one of the best in the NFL, to Dolphins third-year pro Tua Tagovailoa. As talented as Hill is, it's reasonable to expect a decrease in his numbers in 2022. And Diggs? He'll continue to enjoy the continuity of playing with Allen, who has fired at least 36 touchdowns while throwing for 4400 yards in each of the last two seasons. Entering his age-26 season, Allen is poised to make a run at the NFL MVP award, which would only help Diggs put up better numbers.

1. Diggs is skilled in every area

Per Pro Football Focus, Diggs ranks first in the NFL in yards gained against single coverage, with 1,907, which includes the playoffs. That just so happens to be the year he arrived in Buffalo. Clearly, Diggs has stepped up his route-running game since coming to the Bills. However, he's also shown the ability to be a deep threat, as evidenced by his 17.1 yards per reception in his last season in Buffalo. He can excel both as a possession receiver and as a deep threat that can take the top off of the defense. To top it off, Diggs is one of the premier red zone threats in the NFL, having tied for scoring the second most touchdowns inside the 20, with Adams, per Pro Football Reference. Put it all together and that's a player who can be the best receiver in the league. Diggs will prove it after getting his big contract.