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Big Blue’s pass-rush may leave quarterback Dak Prescott bruised in Week 1 after the Dallas Cowboys\u00a0<\/a>lost one of their best offensive linemen on Monday.\u00a0<\/p>\n Cowboys head coach Brian Schottenheimer said three-time Pro Bowl offensive lineman Tyler Smith<\/a> is set to undergo left thumb surgery on Tuesday, and the team will place him on injured reserve. He’s expected to miss four to six weeks.<\/p>\n Smith’s injury will further expose the Cowboys’ pass-protection problems. Last season, he was one of the few reliable pass-protectors for a unit that struggled to keep Prescott upright. Per Pro Football Focus,\u00a0<\/a>the QB was pressured on 233 dropbacks last season, the seventh most in the NFL.\u00a0<\/a><\/p>\n Smith didn’t allow most of those. Splitting time at left tackle and left guard, he blew nine blocks on 644 pass snaps, via Sports Info Solutions.<\/a> That number marked the second-fewest in his first four seasons.<\/p>\n<\/p><\/div>\nHow Tyler Smith’s injury impacts Week 1 matchup against New York Giants<\/a>\u00a0<\/h2>\n