NFL Week 5 preview: 49ers and Eagles try to stay undefeated, Puka Nacua rises and more

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The first month of the 2023 NFL season is already gone, and it’s just amazing how fast that happened.

It’s become clearer who the very good teams are, who the mid-tier teams are, who could become good if they tried harder and who the very bad teams are. There are several things fans should look for going into the fifth week of the season, including some history that could be made overseas.

Before the games kick off on Sunday and Monday night, read below for the things to keep in mind.

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San Francisco 49ers quarterback Brock Purdy, left, is congratulated by running back Christian McCaffrey after scoring during the game against the Arizona Cardinals at Levi's Stadium in Santa Clara, California, on Sunday. (AP Photo/Godofredo A. Vásquez)

It’s probably the most anticipated matchup of the week as the Dallas Cowboys (3-1) march into Santa Clara, California, to take on the undefeated San Francisco 49ers. There’s plenty of history between the two NFC powerhouses, but even more could be made on Sunday night.

San Francisco 49ers quarterback Brock Purdy has yet to lose a regular-season game. With a win, he could join the Cowboys' Dak Prescott as one of seven quarterbacks since the NFL-AFL merger to put together a double-digit winning streak before their third NFL season. San Francisco running back Christian McCaffrey could also become the fourth player in NFL history with at least 100 yards from scrimmage and a touchdown in each of his team’s first five games.

If the 49ers score at least 30 points, they would become the fifth team in league history to score 30 or more points in eight