Antonio Brown has certainly enjoyed his 2018 offseason. 

On Thursday night, Pittsburgh's All-Pro receiver appeared on Jimmy Kimmel Live with two of his five children. The previous night, Brown attended ESPN's ESPY awards as he was nominated for Best NFL Player. 

Brown, who recently celebrated his 30th birthday, has been surprising high school players across the country by showing up at their schools on short notice. Brown's recent visits have included stops in Miami, Dallas, Missouri, Chicago and Los Angeles. 

Brown, the 2017 AFC Offensive Player of the Year, finished No.4 on NFL Network's Top 100 list in both 2017 and 2016. Brown finished eighth on the list in 2015 and 23rd in 2014. Bell, an All-Pro for the second time in his career in 2017, came in at No.9 on the NFL Network's list last year. He finished 41st in 2015 despite missing half the year with a MCL injury. 

A sixth round pick in the 2010 NFL Draft, Brown broke through during the divisional round of that year's AFC playoffs when he caught a key pass late in Pittsburgh's come-from-behind victory over the Baltimore Ravens. After earning his first Pro Bowl and team MVP award in 2011, Brown began the first of five consecutive Pro Bowl campaigns in 2013, catching 110 passes for 1,499 yards and eight touchdowns that season. After leading the league with 129 receptions for 1,698 yards the following season, Brown enjoyed the finest statistical season of his career in 2015, when he caught 136 passes for 1,834 yards and 10 touchdowns while helping the Steelers win their first playoff game since 2010. 

Brown has continued his greatness over the past two seasons while solidifying his place as the greatest receiver of his era. After catching 106 passes for 1,284 yards and 12 scores in 2016, Brown tallied 101 receptions for 1,533 yards and nine scores in just over 13 regular season games in 2017. Brown also caught several game-clinching passes in 2017 en route to earning his fourth team MVP award. 

Steelers running back Le'Veon Bell, who finished fifth on the NFL Network's list, gave Brown the highest honor during an interview with NFL Network. 

“AB’s the best player I’ve ever seen in person," said Bell, Brown's teammate since the 2013 season. "The double team doesn’t matter. AB’s gonna beat the double-team every time. He catches, you know, 200, 300 balls after practice every day. And he’s always working his feet. At the end of the day, he’s going to get the job done."

"I see it 24-7. It’s in practice," added second year receiver, JuJu Smith-Schuster. "It's in practice. It’s in walk throughs. When he catches the ball, he’s immediately tapping. Tony Toe Tap."

And while some of the best skill position players in league history slowed down after turning 30, Brown, who celebrated his 30th birthday on Tuesday, is not worried about such a decline. 

"I don't pay attention to my age," Brown recently told ESPN's Jeremy Fowler. "I'm feeling great, I'm healthy and I'm in great shape. I feel as long as I have that, I can continue to be productive."