San Francisco 49ers quarterback Brock Purdy (13) drops back to pass against the Seattle Seahawks during the first quarter at Levi's Stadium. Darren Yamashita-USA TODAY Sports

Watch: 49ers' Brock Purdy throws 54-yard TD to Deebo Samuel

San Francisco 49ers quarterback Brock Purdy and wide receiver Deebo Samuel keep tearing secondaries to pieces.

Against the Seattle Seahawks, the second-year QB threw a 54-yard TD to the former first-team All-Pro, giving the Niners a 14-10 lead with 8:18 remaining in the second quarter. 

Samuel is coming off his best performance of the season. In a Week 13 win against the Philadephia Eagles (10-2), he had four receptions for 116 yards and two TDs. 

He's following it up with a strong start against Seattle (6-6). He has four receptions for 94 yards and one score through two quarters. 

Purdy's also heating up. Over his past three games, he's completed 74.4% of his passes for eight TDs, one interception and an above-average 135 passer rating. 

The difference-makers thriving is great for San Francisco (9-3). They could help it earn the NFC's No. 1 seed in a tight playoff race.

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