When the Oakland Raiders were on the clock in the fourth round, head coach Jack Del Rio had the inside scoop on the player the team was about to select with the 129th-overall pick in the 2017 NFL Draft.

The Raiders ended up taking David Sharpe, an offensive tackle out of Florida, with that pick, but not before Del Rio called his son, Luke, who is the starting quarterback for the Gators, to get his scouting report. Sharpe said after the selection that he had an idea the Raiders were interested in him after Luke texted him to tell him that his dad had just called to ask about him, according to Jimmy Durkin of the Bay Area News Group.

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Even though Luke Del Rio missed half of the 2016 season due to a shoulder injury, he must have given the Raiders a positive scouting report of his former blind-side protector. Otherwise, the Raiders probably would not have drafted him in the fourth round.

Sharpe is a gigantic lineman who now owns the title of largest player on the Raiders' roster at 6-foot-6 and 357 pounds. Although some scouting reports described him as legally blind in one eye, he says those reports are false. He does admit, however, that his vision is a little blurrier in his right eye due to a cataract he had, but he downplayed the effect it has on his game.

If Del Rio trusted Sharpe to protect his son at Florida, he will likely be OK with giving him an opportunity to protect Raiders quarterback Derek Carr. With Pro Bowl left tackle Donald Penn recently turning 34 years old and the starting right tackle job currently vacant, the team must be thinking about the future of its offensive line.

Sharpe could be the mid-round selection that works his way into the starting lineup over time and keeps Oakland's O-line one of the best units across the league.

Follow Kevin Boilard on Twitter: @247KevinBoilard