With Joe Flacco as their starting quarterback, the Baltimore Ravens are 4-5 this season and 24-27 since the start of 2015.
With Lamar Jackson as their starting quarterback, they're now 3-0.
But a correlation between Jackson starts and Ravens victories does not mean there's a causal relationship between the two events, and Jackson's three-week sample as a starter is both small and cloudy.
The Ravens have won three consecutive games for the first time in a calendar year, but is this streak sustainable with Jackson under center? What about with Flacco? The former is a raw, mistake-prone rookie, but the latter has helped the Ravens get to the playoffs just once in the last five years.