Brock Purdy isn't necessarily a product of Christian McCaffrey, but he's so much better when McCaffrey is on the field. When McCaffrey plays, Purdy's passer rating is 111.9 and his win-loss record is 18-4.

Brock Purdy, with a 5-0 record, has dominated the Seattle Seahawks more than any 49ers quarterback in history. Mind you, the Seahawks didn’t join the NFC West until 2002 realignment, but Purdy still is batting 1.

The Seahawks pressured Brock Purdy on 48% of his dropbacks in Week 6 — the highest rate this season for Seattle and the QB. Yet they finished with no sacks and only four hits. Mike Macdonald said getting Purdy on the ground Sunday is “definitely a point of emphasis” this week. pic.twitter.com/NwFoszZuQt

A nearly forgotten third-string QB is the man 49ers fans really need to thank for Brock Purdy and George Kittle.

In his best game of the season -- Week 8 against the Dallas Cowboys -- Brock Purdy finished with 26.0 fantasy points. His stat line: 18-of-26 (69.2%), 260 yards, 1 TD, 0 INTs; 8 carries, 56 yards, 1 TD.

Purdy already proved this season he could keep the 49ers in the playoff race without most of his weapons, and executed a massive game-winning drive Sunday.

Quarterbacks Brock Purdy and Geno Smith will be going head to head on Nov. 17, when the San Francisco 49ers (5-4) and Seattle Seahawks (4-5) meet at Levi's Stadium. In the piece below, we take a look at the numbers to decide which signal caller is more likely to take his team to victory.

San Francisco 49ers quarterback Brock Purdy faced some inconsistency on Sunday against the Tampa Bay Buccaneers. However, when his team needed him most, the third-year player came through, leading a game-winning drive where he completed four of five passes for 39 yards.