Mazzaro, Romero and Hak-Ju Lee were all once promising fantasy commodities, but that has changed dramatically in recent years. Hak-Ju Lee has struggled for two consecutive seasons in Triple-A, but he would be intriguing if he finally figures it out this season at 25-years-old.

Lee will simply provide some minor league infield depth for the Giants as the big club is already locked in with Brandon Crawford, Joe Panik and Matt Duffy. There's a chance he could earn a bench spot given his 20-steal potential, but that's probably about it for now.

Due to a crowded 40 man roster, Hak-Ju Lee was designated for assignment by the Rays and has cleared waivers. Since he was not claimed, he has been assigned to Triple-A Durham.