101 PAs into his career Pratt has 0.7 fWAR, which is a 4 win season as a full time player. As always difficult to project, but a solid combination of defense, batting, and baserunning all contributing helps make things more stable. DRS says he is a better SS than Joey and Joey comes out as a very good defensive 3rd basemen so the team definitely looks better with those two where they are.