Todd McShay analyzes the top three picks in his latest NFL mock draft and explains why Carson Wentz could be the first quarterback selected. (1:40)

The 2016 NFL draft is now just over a month away, making it a good time to release my fourth mock draft. This one, unlike the three prior, goes two rounds deep.

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My tape study of nearly all the top prospects is now complete, and the free-agency frenzy is behind us, so we're dealing with a much clearer picture of team needs. There has also been a change to the draft order in this edition, with the Dolphins and Eagles swapping first-rounders as part of the Byron Maxwell/Kiko Alonso trade.

Let's dive into the picks.

Laremy Tunsil, OT, Mississippi

The Titans have made it clear they're open to trading the No. 1 overall pick, but general manager Jon Robinson also emphasized last week they would need a substantial offer to do so. If they keep the pick, I could see them going in one of three directions: pass-rusher (Joey Bosa is the most obvious candidate), defensive back (Jalen Ramsey) or left tackle (Tunsil). I'll stick with Tunsil for now. He's the most talented offensive lineman in the draft, and it's a clear need for the Titans, who have to protect the QB better this season after they allowed 54 sacks total in 2015.

Carson Wentz, QB, North Dakota State

Even if the Browns sign Robert Griffin III or trade for Colin Kaepernick, they still should use this pick on a quarterback. Since returning to the NFL in 1999, Cleveland has had 24 different starting quarterbacks, five more than any other team in the league. Wentz and Cal's Jared Goff are extremely close on my board, with the North Dakota State product slightly ahead. Wentz has the height, sturdy frame, natural accuracy and on-field leadership you look for in a QB.

Editor's note: According to ESPN's Adam Schefter, RG III is in fact expected to sign with Cleveland.

Jalen Ramsey, DB, Florida State

Defensive line is another need for the Chargers, but with Eric Weddle gone, San Diego will likely look to upgrade its secondary in the draft. Ramsey's ability to play both corner and safety gives him added value to the Chargers, who aren't set at either position. An All-America track-and-field star at Florida State, Ramsey is an extremely rare athlete and one of the best all-around football players in this draft.