A lot went wrong for Mike Vrabel and the Patriots in their season-opening loss to the Raiders on Sunday at Gillette Stadium.

After a promising first half, Drake Maye and the Patriots’ offense flatlined down the stretch — punting or turning the ball over on six of the team’s final seven drives of the afternoon.

New England’s defense did only allow 20 points, but Geno Smith and the Raiders still managed to generate plenty of explosive plays in Foxborough — with Las Vegas closing out the game with nine plays of 20-plus yards.

But for former Patriots center David Andrews, the most disheartening result from Sunday’s 20-13 loss revolved around New England’s poor showing in the run game.

“Watching the game from an O-line perspective, an offensive perspective, I wasn’t that disappointed in the

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