A. J. Derby

On August 7, 2019, Derby was signed by the New Orleans Saints. He was released during final roster cuts on August 30, 2019.

On December 4, 2018, Derby was placed on injured reserve with a foot injury.

He played in the Denver Broncos' season-opener against the Los Angeles Chargers and caught three passes for 34-yards during their 24-21 victory. On October 1, 2017, Derby made four receptions for 75 receiving yards and scored the first touchdown of his career in Denver's 16-10 win against the Oakland Raiders. His first career touchdown reception came in the first quarter on a 22-yard pass by Trevor Siemian. On October 22, 2017, he caught a career-high six passes for 66-yards in a 21-0 loss to the Los Angeles Chargers. The next week, Derby made two receptions for 21-yards and caught an 11-yard touchdown reception in a 29-19 loss at the Kansas City Chiefs.

On November 18, 2017, Derby was waived/injured by the Broncos with a shoulder injury and was placed on injured reserve. He was released with an injury settlement on November 28, 2017.

On November 29, 2017, Derby was claimed off waivers by the Miami Dolphins. Upon arrival, head coach Adam Gase named Derby the fourth tight end on the Dolphins' depth chart, behind Julius Thomas, Anthony Fasano, and MarQueis Gray. On December 24, 2017, Derby made his Dolphins' debut after Julius Thomas was place on injured reserve. He caught one pass for 11-yards in the Dolphins' 29-13 loss at the Kansas City Chiefs.

In 2016, Derby competed with Clay Harbor, Bryce Williams, and Steven Scheu in training camp to be the Patriots' third tight end. Unfortunately, head coach Bill Belichick named Derby the Patriots' fourth tight end behind Rob Gronkowski, Martellus Bennett, and Clay Harbor. He made his professional debut in the New England Patriots' season-opening 23-21 victory at the Arizona Cardinals. He was a healthy scratch for four games during the season (Weeks 2-3, 7-8).

On October 25, 2016, Derby was traded to the Denver Broncos for a fifth-round draft pick (163rd overall) in the 2017 NFL Draft. The selection was later dealt to the Buffalo Bills as compensation for the Patriots to sign Mike Gillislee.

On November 6, 2016, Derby earned his first career start during a 30-20 loss to the Oakland Raiders. The next week, Derby caught two passes for 22-yards in the Broncos' 25-23 victory over the New Orleans Saints. He made his first career reception on a ten-yard pass by quarterback Trevor Siemian. On December 11, 2016, Derby made a season-high five receptions for 57 receiving yards during a 13-10 loss at the Tennessee Titans. The next week, he caught four passes for 35-yards against his former team, the New England Patriots, during their 16-3 loss. He left the game after suffering a concussion and missed inactive for the last two games of the season. He finished the season with 16 receptions in 160 receiving yards in three starts and ten games.

The New England Patriots selected Derby in the sixth round (202nd overall) of the 2015 NFL Draft. He was the 13th tight end selected in 2015. On May 8, 2015, the Patriots signed Derby to a four-year, $2.39 million contract with a signing bonus of $112,05. After missing spring training, he entered training camp and joined in an open competition for the job as the second tight end, competing against Michael Hoomanawanui, Scott Chandler, Jake Bequette, and Jimmay Mundine. On August 5, 2015, he was placed on injured reserve after clearing waivers.

On November 30, 2014, it was announced that Derby had accepted his invitation to play in the 2015 East–West Shrine Game. Unfortunately, Derby was unable to play in the East–West Shrine Game after suffering a knee injury. He was one of 19 collegiate tight ends to attend the NFL Scouting Combine in Indianapolis, Indiana. Derby was limited to performing the bench press due to his knee injury and successfully had 15 reps, placing him 13th among tight ends, only ahead of Oklahoma's Blake Bell. On March 4, 2015, Derby attended Arkansas' pro day, along with Trey Flowers, Darius Philon, Martrell Spaight, and 13 other prospects. He was able to perform all of the combine drills he skipped at the combine and was said to have had a good workout overall by NFL analyst Gil Brandt. Derby also performed positional drills and caught the ball well in front of team representatives and scouts from 28 NFL teams. At the conclusion of the pre-draft process, Derby was projected to be a seventh round pick or priority undrafted free agent by NFL draft experts and scouts. He was ranked the 17th best tight end prospect in the draft by NFLDraftScout.com.

Derby started his collegiate career at Iowa, where, after redshirting his freshman year, he was a backup quarterback in 2011. He appeared in nine games and completed three passes for 30 yards.

Alexander John "A. J." Derby (born September 20, 1991) is an American football tight end who is currently a free agent. He played college football at Iowa (2010–11), Coffeyville Community College (2012) and Arkansas (2013–14).