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SANTA CLARA — NFL Network draft czar Mike Mayock, outside of the 49ers brass, might be the most outspoken supporter of offensive tackle Mike McGlinchey, and this is no sudden draft crush.

Mayock is a Philadelphia native whose followed McGlinchey’s path from William Penn Charter School in north Philly.

“I’ve known this kid since he was 15 years old, and when he gets his hands on you and anchors down, it’s all over,” Mayock said on the NFL Network’s draft coverage. “He is a flat back pile driver in the run game. He has the work ethic and passion of his cousin, Matt Ryan.

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49ers’ Nick Bosa, Solomon Thomas indeed out for season with torn ACLs “He’ll set a tone both in the offensive line room and a culture in the locker room,” Mayock continued. “Left tackle that’s got nasty to him. Heavy hands. Occasionally he will break down in passing game. Against georgia he gets the left hand pinned. … Trust me he learns from his mistakes. He’s the cleanest tackle in this draft.”

Here is a sampling of what other draftniks thought of the 49ers’ selection at No. 9 overall:

Fox Sports analyst Troy Aikman: “I really like it. When you look at the fact they were able to bring in Jimmy Garoppolo last year with a second-round pick – where he would have ranked this year, he obviously would have gone pretty high – now you secure that offensive line. A team that gave up too many sacks. Now they’re going to try to protect this franchise quarterback. I think it’s a good pick.” Like our San Francisco 49ers Facebook page for more 49ers news, commentary and conversation.

Sports Illustrated’s Andy Benoit: “Drafting McGlinchey is a bit of a head-scratcher given that the 49ers just gave left tackle Joe Staley a raise for the next two years. Right tackle is just as valuable in today’s NFL, but it’s hard to imagine the Niners not signing Trent Brown (the NFL’s largest man, and a decent athlete) to a long-term deal after this season. Do they believe the nearly 6’ 8” McGlinchey can somehow play guard? Do they believe Brown can? Or do they think Staley is slowing down, which was the belief before he turned in a stellar 2017 season? Adding to the curiosity of this pick is the fact that Kyle Shanahan’s system often makes life easier on pass rushers. It is a zone running-based scheme, however, and those blocks require athleticism along the O-line. GRADE: C”

CBS Sports’ Pete Prisco: “He will be a backup next year, but then take over for Joe Staley. Solid future pick.”

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Bleacher Report’s Mike Tanier: “Good: Mike McGlinchey is Matt Ryan’s cousin. He has a winning, likable personality, like Jason Kelce without the “unhinged Batman villain” vibe. He’s also a punishing run-blocker with fine technique who did a swell job cleaning up the devastation left in teammate Quenton Nelson’s wake. And unlike tackles who played in wide-open offenses, he can line up in a three-point stance without looking like a middle-aged fat guy at his first yoga class. … Bad: McGlinchey doesn’t fit the left tackle prototype. Top edge-rushers are going to win against him. … Grade: B-plus.”