Another week of baseball is down, and it's time to take a look at morefirst base and third base fantasy baseball waiver wire pickups for Week 13 June 17 through June 23.Andrew Vaughn is showing signs of his high-upside potential, making him a must-add for his power and run-production capabilities. Brendan Donovan's versatility and consistent performance make him a reliable option in multiple positions. Tyler Soderstrom is an emerging talent whose recent call-up could translate to instant ...