Leach was cut by the Ravens in May in a salary cap move. The Pro Bowl fullback immediately drew interest from other teams and visited both the Dolphins and Giants, while the Texans also reached out to Leach, but he didn't sign. The more time that passed with Leach unsigned, the more likely it looked that he would return to Baltimore. On Monday, he finally did.
A season-ending hip dislocation to Dennis Pitta may have forced the Ravens' hand with Leach. With Pitta out, and Anquan Boldin having already been traded away earlier in the offseason, Baltimore was going to struggle to pass the ball. That makes a strong running game all the more important, and paved the way for the Ravens to bring Leach back.