The slugfest is on in Baltimore. 

In what could be a Super Bowl preview, the 49ers and Ravens are trading blows and trolls early Sunday morning in a rain-soaked affair.

After the Ravens jumped out to a 14-7 lead in the second quarter, the 49ers evened things up thanks to the speed and agility of one Raheem Mostert.

On first-and-10 from the Ravens' 40-yard line, the 49ers running back took the handoff over the right side, got a massive block from tight end George Kittle, stiff-armed a defender and then shook safety Earl Thomas to complete a 40-yard touchdown run.

Gotta wrap up Earl.

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The Ravens added a field goal at the end of the quarter to take a 17-14 lead into the break.